noun, a more appropriate name for an athletic cup to prevent ambiguous confusion between a cup to drink with. You do not and should not drink from an athletic cup, therefore it should no longer be known as a cup.
The act of inserting glass tubes into the genital chamber of a male or female and proceeding to break the glass while still inside the genitalia. This gives the receiver multiple simultaneous stimulations resulting in an out of body experience.
Tom can't hang out tonight, he and Janey went a little too hard on their last dicksharding session so he's in the emergency room.