When the pubic hair of a woman is long enough to hang down in a bushy manner which resembles the beard of the great wizard Merlin.
Jaron: I heard you hooked up with a girl last night, how was it?
Dan: Man, she had a crazy Merlin Muff. I thought she was about to start shooting magic spells from her crotch.
Dan: Man, she had a crazy Merlin Muff. I thought she was about to start shooting magic spells from her crotch.
by B3nR3177y April 19, 2017
Get the Merlin Muffmug.