1) When one surfs a less than stellar wave and it breaks short leaving you with nothing but sand beneath you as your board flies in the air and your head heads for the ground
Side effects: possible unconsciousness, shortened penius, anal bleeding, and/or broken nose

2) Can also be used to describe an epic fail.
1)MC of the Surf Competition: as watches a competitor crash hard on the shore Competitor #1 with the lobster dive!

2) When a friend gets rejected from the opposite sex, can describe the act as a lobster dive
by Big-er Stuff February 22, 2010
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Sexual position in which the man performs cunnilingus while simultaneously tweaking the nipple making the nom nom nom noise.
Eric was lobster diving Beth when she farmed.
by Pattycakes August 3, 2014
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