Whilst giving fellatio in an inibriated state, the person recieving the act then proceeds to vomit all over the head and back of the fellatio giver, thus giving the appearance of a male lion's mane.
after a long night of drinking, John and Jane went upstairs only to have Jane run back downstairs with a brand new lion's mane
by Poppa Diddy Pop August 16, 2005
An untreated genital warts/HPV infection that's reached incredible mass in proportion to the rest of the penis. The warts - especially when emerging from beneath the foreskin appear as a "mane" - hence, Lions Mane to describe the condition.
by Big Don Griener April 27, 2006