Eruction

Instant ejaculation following the emergence of a boner. One gets an erection and ejaculates seemingly simultaneously.

Dude, I just had an eruction.

by Prince J Albert March 05, 2008

Ereption

An ejaculation occurring while the penis is not erect. This often catches the male off guard and makes a horrible mess

Shit, I didn't see this ereption coming.

by Prince J Albert March 05, 2008