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A sexual act that involves the male adopting a naked 'Crab' like position by leaning backwards and standing on his legs and hands as the partner stimulates the penis using only the inside of their elbow.
Evee: Hey Hannah the inside of your elbow looks red raw did you have a reaction to something?

Hannah: Oh no, there friction burns i tried out the Arthritic Crab Grapple Hammer with Owen last night!
by Uberwang69 May 12, 2012
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