It's funny because it's poisonous!

something you say to explain why you're laughing after someone just ate a food item that you gave them (that you slipped arsenic or something into).

"HAHAHAHAHA!!! SUCKA!!!"
"What's so funny, dumbass? I'm just eating this pizza."
"It's funny because it's poisonous! I just slipped a shitload of cyanide into that pizza."
"OH SHIT!!! I'm gonna kill you motherfu-" (drops dead)

by Nick D March 6, 2003

It's funny because it's poisonous!

When your tripping real shrooms and some guy you dont like is tripping the bad kind of shrooms.

I hope your not laughing because this is my 1st time tripping shrooms.
No bitch it's funny because its poisonous.

by Matt Fox February 28, 2005

It's funny because it's poisonous!

Something you say when a really freaky person does something funny.

Rohan: Hey, Scott, stop touching my ass!
Evan: It's funny because it's poisonous!

by Anonymous February 21, 2003