Mathematical calculation to determine the time a female got knocked up. Most often used to narrow down possible biological fathers of the baby. (date expecting- 9).
Guy 1 and Guy 2 chatting:
Guy 1: "Hey, did you hear Jullie is gonna have a baby in March?"
Guy 2: (inwardly calculates pregnancy math.....)
Guy 2: "Naw, I didnt know that. But that ought to narrow down the possible dads to about a dozen guys she was with last July"
Guy 1: "Hey, did you hear Jullie is gonna have a baby in March?"
Guy 2: (inwardly calculates pregnancy math.....)
Guy 2: "Naw, I didnt know that. But that ought to narrow down the possible dads to about a dozen guys she was with last July"
by Mathguy July 7, 2012

A point in life where you have reached a level of accomplishment that will not be threatened should you knock a girl up. Sexual relations that result in impregnation prior to this point may prevent the completion of an adequate level of schooling, and most certainly end in a shitty job/lifestyle (I.e. working at McDonald's and living in a trailer park).
Dude, nine months till you finish university and officially past the pregnancy point. You can bare back it worry free!
by Walla_B September 21, 2014

*rip*
Girl: what was that
Boy: nothing uh haha
Girl: don't you dare tell me it ripped
Boy: uh then I won't...
Girl: $#&@#__##&#&#&#-#&@&&_#@#_@&£{`¶|¶®€{¢}€}¥}|}¢©©{¢¢©®✓!!!!!??!!!
Boy: my bad?
Girl: what was that
Boy: nothing uh haha
Girl: don't you dare tell me it ripped
Boy: uh then I won't...
Girl: $#&@#__##&#&#&#-#&@&&_#@#_@&£{`¶|¶®€{¢}€}¥}|}¢©©{¢¢©®✓!!!!!??!!!
Boy: my bad?
by Itsyaboi_88 August 13, 2017

The result of the act of an anal creampie. i.e. semen creeping into the opening of the vagina after the man has pulled out.
Bill was having anal sex with Jill and climaxed in her butt. He promptly pulled out and the semen ricocheted into the opening of Jill's vagina. As a result of this act Jill became pregnant and Bill pays child support. Jill now has a ricochet pregnancy.
by bambitch87 May 22, 2015

by Fake news ÒwÓ January 24, 2019

When teens get pregnant.
The most effective way to prevent this is not condoms but fat ugly girls/beasts, and lots of em.
See Elyse, and ugly.
The most effective way to prevent this is not condoms but fat ugly girls/beasts, and lots of em.
See Elyse, and ugly.
by Cock Toad May 11, 2004

When your girlfriend goes and gets pregnant on accident off of another guy, even though she was going out with you and having sex with you. Usually because she was cheating.
Guy: What the f*** dude! you said you wouldn't get your girlfriend pregnant, and now you broke up with her too!
Friend: For a good reason, it was a jerry pregnancy.
Friend: For a good reason, it was a jerry pregnancy.
by Mark2791 December 17, 2008
