Top Definition
The act of continuing drinking (getting lashed) after a night out on the town.
-Do you fancy coming back to ours for a bit of a post lash?

-Wheres post lash happening tonight?
-Ace, see you there.

-Last night was so much fun. The post lash was the best bit.
by gregsmith January 30, 2009
6 Words related to post lash

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