someone who is creepy enough to sniff their sister's underwear. other perverted acts may follow
when no one was home gary sneaked in his sister's room and grabbed one of his sister's pair of panties. at this point he had officially become a sister sniffer
When something unexpected happens.
The end of the Sixth Sense was a total "Oprah's Sister"
Two ladies who have both ridden the same penis. The feminine form of the term Tunnel Brothers.
' Fuck yeah, I banged Johnny last night!' - Sally
' Mate, so did Mary last week, congratulations, you're Saddle Sisters now!' - Gertrude
'That's etch...' - Sally
a nun.
sister delaney: i’m a nun.
all the rest of the nuns: same bitch
finnegan: i’m a fucking dumbass
all the rest of the nuns: no shit u fucking bald ass
monk
Girls that are just friends (NOT DATING) that like to cuddle.
Are you guys dating? Asks Steve to Jan and Laurie. No, says Laurie, we're just friends who cuddle. Yeah! Says Jan, we're potato sisters!
Person A: hey man what are you doing?
Person B: ur sister, bitch