What is Sister Slammer?
1.
The act of screwing your sister.
Not a name to be proud of.
Nasty, gross and wrong.
Usually due to country lifestyle.
see
Random Guy: Dude, did you hear? Last night john screwed his sister.
Random Guy2: Ew... Bekka? He's a fuckin' sister slammer
See
Random Words:
1.
A man that is known to be gay.
Man #1: "Dude, Joe sure seems to get a lot of ladies."
Man #2: "Naw, not him. He is a m..