The commonly seen attempt of topping out on your climbing route. Involves laying on your stomach while flailing your arms and legs. Often unsuccessful. To see this phenomynon just take a trip up to your local climbing craigs, sit back, and wait. You won't miss it!
Bystander 1: Hey. Look! What's that guy doing ontop of that rock?

Bystander 2: Aw man, he's tryin' the beached whale! It's not gonna work!
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When you take a dump while sitting on the toilet backwards so that your fecal matter ends up on the dry part of the toilet and not in the water.
Last time I used Gabe's bathroom I left a gnarly beached whale.
by wigwam69 September 10, 2006
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An individual who is confined to their bed due to their morbid obesity; one who wallows in their own excrements.
"Whoa! look at that beached whale"
by ricemond December 6, 2003
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Word used to describe people called Beth.
Person #1: Yo! Did you see the new girl called Beth?
Person #2: you mean beached whale?
Person #1: ya, her.
by TittyBuster78 September 15, 2020
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When fecal matter in a toilet is only partly submerged in water and partially lay on the dry porcelain of the toilet bowl.
"Shit. Look at that beached whale! Sorry brown buddy, I didn't mean to let you perish like that."
by Jerome Jenkins April 29, 2006
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A really fat chick stranded outside a bar after closing time looking for a guy to take them home.
Ryan, I thought you were gonna rescue that beached whale last night.
by Anonymous Motrin May 30, 2009
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