Top definition
The rule that requires sexual intercourse to last at least two full thrusts before it counts as sex, allowing for a brief "trial period."
We started having sex but he came so quickly that he didn't even make the two-thrust rule, so as far as I'm concerned we didn't actually have sex.
by Ci Bach October 08, 2009
Get the mug
Get a two-thrust rule mug for your brother Trump.