"My name is GIR the Unit, HI THERE!" GIR screamed at a passing girl and her mother.

"And I am here to say, HOW YA DOING'?" He waved to Old Kid.

"I'm gonna make you smile and I will brighten up your day," he sang, stopping when he saw two sad kids.

"It doesn't matter now, WHAT'S UP?" He walked up to them. They didn't seem surprised at all that the small green dog was talking.

"If you are sad or blue, HOWDY!" He poked their faces.

"'Cause cheering up my friends is just what GIR is here to do," he pulled out a rubber pig and waved it in their faces. They giggled and took it.

"'Cause I love to make you smile, smile, smile,

Yes I do," he scooped them up and began juggling them, making them squeal in delight. More kids crowded around, cheering GIR on.

"It fills my heart with cupcakes all the while

Yes it does," GIR tossed the kids into the crowd and ran away.

"'Cause all I really need's a smile, smile, smile,

From these happy friends of mine," GIR waved to the kids over his shoulder, and they beamed back at him.

"I like to see you grin, hello!" He sang, skipping into the Skool playground and waving to the kids on the swings.

"I love to see you beam, hold on!" He cried, activating his rocket feet and swinging the kids really high into the air. They cheered and beamed at him as he took a bow.

"The corners of your mouth turned up is always GIR's dream, weird lump!" He said, pointing to a pimple on a boy's cheek.

"But if you're kind of worried,

And your face has made a frown," he noticed Zin, in her human disguise (a small, blue eyed girl with short black hair) swinging sadly on a distant swing.

"I'll work real hard and do my best to turn that sad frown upside down," he flee over and grabbed her under her arms, lifting her into the air. She whooped in delight, her hair flying.

"'Cause I love to make you grin, grin, grin

Yes I do," he sang, placing her down in a cheering group of kids.

"Bust it out from eye to eye let it begin," he hugged her around her middle then flew away, waving over his shoulder.

"Just give me a joyful grin, grin, grin

And you fill me with good cheer!" He did a loop-de-loop in the air, soaring over the city.

"It's true some days are dark and lonely," He thought of his lost head-bees sadly.

"And maybe you feel sad,

But GIR will be there to show you that it isn't that bad," he forgot about it and squealed like a piglet.

"There's one thing that makes me happy and makes my whole life, worthwhile,

And that's when I talk to my friends and get them to smile!" He crashed through the Skool roof to hug Zim.

"I really am so happy

Your smile fills me with cheese," he giggled and leaped out of the way as Zim lunged for him.

"I give a smile I get a smile

And that's so special to me," he pulled Zim's cheeks so it looked as though he was smiling then he flew away.

"'Cause I love to see you beam, beam, beam

Yes I do," he landed in front of the smeet girls and they grinned and ran after him.

"Tell me what more can I say

To make you see

That I do," the SIR twins looked up and zoomed after their dad.

"It makes me happy when you beam, beam, beam," Dib, Zim, Hail and Zee bolted after the Unit, pushing people over to reach him first. The Irkens wanted to catch him before he was noticed... some more, and Dib wanted proof of aliens.

"Yes it always makes my day," GIR did a tap dance on Dib's head, making him laugh.

"Come on everybody smile, smile, smile,

Fill my heart up with muffins, muffins," GIR cried, dancing in front of a large crowd of humans, all beaming at him. Zee began singing with Him, and the crowd joined in.

"All I really need's a smile, smile, smile,

From these happy friends of mine!" GIR cried happily, the crowd beaming at him.

"Come on everybody smile, smile, smile,

Fill my heart up with waffles, waffles

All I really need's a smile, smile, smile

From these happy friends of mine," the crowd and GIR sang, as he pulled Dib, Zee, Zim, the SIR twins and the smeet girls into the center. Keegz twirled the Unit around, making Zim crack a small smile.

"Yes the perfect gift for me," GIR sang as he stopped spinning.

"Come on everybody smile, smile, smile," the crowd sang over him.

"Is a smile as wide as a mile," GIR continued, standing on Dib's head again, singing his little heart out.

"Fill my heart up with mooses, mooses," the crowd sang again, joining hands and swaying.

"To make me happy as can be," the SIR twins sang, hugging their dad.

"All I really need's a smile, smile, smile; From these happy friends of-" The crowd continued.

"Smile, smile, smile, smile, smile," they all sang, GIR rising into the air slowly.

"Come on and smile!" The smeet girls cried.

"Come on and smile!" GIR landed, upside-down in front of Gaz. She growled.