A rule of the utmost priority for any outstanding gentleman/someone who wishes to not be murdered in their sleep.
Baz: I barely escaped with my life last night, this girl I used to sleep with came after me with a machete!
Gill: What did we tell you?
Baz: ...Don't stick your dick in crazy.
Gill: Don't stick your dick in crazy.
by sourceofinfinitewisdom November 5, 2013
A relatively recent but perennially true maxim, advising one to refrain from sexual congress with the unbalanced.
Bro 1: Dude, that girl with the Tori Amos shirt is HOT.
Bro 2: Bro, bro, always remember: Don't Stick Your Dick in Crazy. Here me now and believe me later.
by Harry Krinkle November 5, 2013
Pretty straightforward. That moral your friends repeat over and over again when they tell you that you shouldn't have slept with that girl last night 'cause they knew she'd take shit too seriously.
Clarence: shit bruv that Jessica chick is all over me she won't get off of me man she's tagging me in all this relationship post bullshit, saving pics of me, telling her friends, texting me 24/7... what do I do?
Bob: bro idk lmao you bloody fuckin' had sex with her not me. you know what they say fam don't stick your dick in crazy.
by Seenlord February 16, 2016