What is Merlin's Beard?
1.
An exclamation from Harry Potter which is similar to "Oh Lord!"
"He just shat his pants!!"
"Merlin's Beard!!!"
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2.
When having
"Hey guess what Rich, I did a Merlin's beard on your mum last night!"
"Oh right I just thought she hadn't shaved!"
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3.
A layer of semen on a girl's face in areas where facial hair is commonly found on men, e.g. chin, upper lip, cheeks, neck. Usually results after a blowjob.
"Do you want a blowjob, sweetheart?"
"Yeah! How do you want it to end today, honey?"
"I'd love to have a Merlin's Beard, but whatever you want. It's your special day."
"You want it, you got it!"
See