by 4C6 July 17, 2005
P9 is a very commonly used word that is used to describe how long a male's penis. P9 is referred to as a very large Penis and 9 refers to the size 1 being the smallest 9 being the largest.
When I saw KJ and he showed me he's massive penis it was a P9 and it was the biggest I've ever seen.
by Kyliе Jennеr January 02, 2021
by MJ india January 08, 2009
It is a group sex act where everyone is performing oral on one another in a continuos chain. It can also be referred to as chain 69 (69 doesn't make a chain though). The anatomy lines up if you p9 in a chain.
p
9
p
9
p
9
p
9
Let's all chain p9 each other.
by Dick bomb July 29, 2014