Sibling Psychology Enthusiast T-Shirts

"It's not gas...it's sibling rivalry."

'Number two. That's the art that offended me.'

PET THEORIES

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

'Is that IT? All this way for just the ONE?'

A Truism's Journey

"Act your birth order!"

'He took a fetching class.'

Warhol Exhibit

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

C'mon boy, speak! Speak!

Lesser Known Historical Figures: The Steno at the First Thanksgiving Dinner.

The Poodle and The Twooudle.

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

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

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

"And another thing - I'm tired of you calling my band a 'side project'."

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

"Beware of watchdog."

Principal: 'Is THERE a DOCTORATE in the House?!'

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

Brother and sister at the dentist

'How do you figure?'

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

'I told my Mom either the sitter goes, or I go!'

"Don't smile, you're on Candid Camus."

"It's hard to believe the adults think he's so lovable!"

"If I were your big sister, I'd show you how to act right!"

'I'm looking forward to when he's 5 years old so I can boss him around.'

"Just be aware, once you go upright there's no going back."

Things that don't last 2 seconds...the idea that your l'il sis might actually be good at something.