To flail desperately
As John attempted to climb the crack in the cliff he started thrutching, causing his skin to peel and his hands to bleed.
by Marc Leclerc March 11, 2008
The final act whilst sat upon a toilet & having a dump, to squeeze the final bits of poo out.
I was sat on the john the other day for like, 10 minutes of pure thrutching, and nothing came out. I felt cheated
by Dan_the_01 May 09, 2011

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