When you ejaculate and instead of shooting outwards, it just overflows like a volcano and runs down your dick.
by Big Taran November 1, 2010
by Justme™ February 16, 2020
the acting cumming in ass then having that person fart directly into your mouth blasyingnout all the semen.
Man1: dude I came in my girls ass and we pulled an accidental cumcano. *goes in for a high five*
Man2: Johnathan that was your mother she came to visit you in the asylum you've been locked up for 8 years
Man1 so no high five *lowers hand*
Man2: Johnathan that was your mother she came to visit you in the asylum you've been locked up for 8 years
Man1 so no high five *lowers hand*
by Herbert joemingo January 7, 2020
When masturbating after ejaculation when the cum fills your belly button. You squeeze your belly button causing a cumcano
by dr. cuddles February 3, 2011