A fork of Rural Dictionary
When you sit down to take a shit but your penis dips into the last user of the toilets poo
Jimmy (taking his dick out to masturbate on the toilet): Oh fuck, not a poonis again
The genitalia of a gay man within 10 minutes of having given anal love.
"After I gave him my love, my poonis was stanky."
1) Your poonis may be bigger than mine, however: mine creates larger poochunks than yours on average.
On the rare occasion that a person is born with both a vagina (poon) and a penis, they have poonis.