Throwing knuckleballs: code for camel toe
Normally used in a situation to warn a friend to dodge the possibility of having to get an eye full of camel toe. The name knuckleball refers to the resemblance of a camel toe and a the way a baseball players fingers look when throwing a knuckleball.
Scott: Watch out she's throwing knuckleballs

Tom: Thanks for the head's up
by Alphapyr0 January 15, 2014
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