lets see, short t-shirts revenge ideas for the sis, in psycology I'm usually the best with brainstorming:
"May the force be with me"
"I saw star wars before you did"
"I am a jedi dike"
"Jar Jar fan club"
"Star wars before family"
"Star wars trivia genius"
"Is that a wookie in your pocket?"
"How big is your light sabre?"
"A sister shall not know anger, nor hatred, nor love for brother."
"Oops I did it again"
"Flat is beautiful"
"A long time ago when my brother was far far away"
sorry if I got a little sidetracked, I do that sometimes.