Top Definition
Injaculation is sticking 2 fingers on your PC muscle near the anus to keep semen from coming out during the orgasm. The semen is pushed back into the persons bladder, prolonging the orgasm and causing some painfull pissing in the morning.
by 2nd seal February 18, 2003
1 more definition
1. To ejaculate in the opposite direction (inwards)
2. To receive ejaculated matter into oneself; to be injaculated

Origin unknown
I had the worst injaculation the other day, it all came out of my mouth at the end though. So I'm fine, what's up with you?
by retarded smurf May 31, 2004

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