Top Definition
Merlin's gag usually occurs after intimate pubic relations. In involves finding a rogue, ominously thick, hair at the back of your throat. Merlin's gag ensues, it's a cat like reflex, but no matter what you do that sucker is not going anywhere.
Jesus, I've had a Merlin's gag on all day! I knew I should have wet shaved her first!
by JosieA May 11, 2007

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