To manta ray someone, you must catch them off guard, usually after somebody goats/bulldogs you....
You casually smile and say " you ever seen a mantaray"
and then with two hands grab the foreskin of your balls and fold them over your dick all the way up to your pant line or even belly button...

Note: few can actually pull of the manta ray. Very large balls are necessary
Andrew: dude, Mike passed out cold

Moses: I should teabag him and send it to his mom

Charles: ....or I could give him the manta ray
by TotallyTrippin99 September 8, 2010
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Look at that small wane Manta Ray! Hey Ray Sipe go poach em!
by Lok Neboora October 12, 2017
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An obscure facial expression where the lips move in opposite directions and the head is cocked to one side. Most often made by Manta.
Show us the Manta Cat!
by nueb October 25, 2004
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