prebumptual agreement 

It's like a prenuptial agreement, but it specifies the rules of a one night stand instead of that of a marriage.
short: prebump

I was gonna bang out jessica last night but she wouldn't sign the prebumptual agreement

prebumptual agreement by bigearl January 22, 2009

prehumptial agreement 

Noun. The consent provided between adults prior to engaging in either casual, friends with benefits, or meaningless sex.

Similar to a prenumptial agreement but with a different line of business.

AKA 'the prehump'

I told him not to get all crazy after we hooked up. It was all explained during the prehumptial agreement.

prehumptial agreement by dubyabejay May 18, 2009

prehumptial agreement 

A written agreement before intercourse

Bill and Jane signed a prehumptial agreement before engaging in intercourse

prehumptial agreement by thearauser May 1, 2020