Comical Sibling Rivalry Fan T-Shirts

No date for the prom, green girl? If you ever grow up, nerd boy

Polygamists' Picnic

"He's my smart-aleck twin."

"I'm an oldest child trapped in the body of a middle child."

"Good work Tim, you snatch it all: none of this sharing with your brother nonsense..."

It's my biggest project - a database of all my sister's boyfriends.

"At home there's a fish, a cat, a dog, me, and a big sister."

"We tried to play nicely, but frankly it's not as much fun as tormenting each other."

Help!I am being forced to eat vegetables

The noise from the basement was probably nothing – but if it was, she was a sacrifice her older brothers were willing to make.

"Act your birth order!"

'No hair or teeth, can't walk or talk -- she's kind of a starter kit.'

'My brother got all the glory. For me it was Randolph with your nose so pink, you really make my sleigh team stink.'

LEMONADE 50 CENTS, 'Sorry, cash only -- we don't accept little brothers.'

"Gracie, I'm getting way tired of your Jane Goodall routine!"

What will be the worst part about your first semester of college being online classes only? My little brother will be my freshman year roommate!

'Mum, she pulled my mane!'

"You can't live in our basement. Your brother beat you to it."

'At first I wanted a brother, but I've changed my mind... I want a puppy now.'

'I suppose this puts my new bike on the back burner?'

'How do you expect them to treat you in a mature way with that thing in your mouth?'

Technically, no, dear, your brother isn't plagiarizing you. ABC. ABC.

'Watch out for my little brother -- he's clothing-optional.'

"How many times do I have to tell you to quit going through your little brother!"

'Take it from someone with experience. . . you can't go throwing tantrums until you've at least tossed a few.'

'Mom! - Jeffrey just said a DADDY word!!'

'Stop crying or Mom will think we're not having fun!'

'No hair or teeth, can't walk or talk -- he's kind of a starter kit.'

'MOM! -- Samantha called me names in her diary!'

'He doesn't really talk yet, but he does some sound bites.'

Mom! Billy's censoring me!

Trick Number 9: plant valuables in his room...in case you need a reason for a quick getaway.

"I'm wearing new cologne. I hope Smiley is able to control herself around me today."

"Don't worry, and don't listen to your brother! You can't really smell fear: it's just an expression..."

'The only reason I take him with me wherever I go, is because the thought of kissing him goodbye makes me feel sick!'