When a person with Leprosy starts to get gangrene in their penis, which proceeds to slowly decompose and fall off.
My uncle is a leper, and he has one of the most terrible cases of Mexican Green Rocket ever... And he showed me.
by Flypig777 July 29, 2009
Get the Mexican Green Rocketmug. by Yahboieasy April 12, 2016
Get the green rocketmug.