A noticeable effect of being unhappy.
Why have you got a face like a bulldog licking piss off a thistle?
by Anonymous May 26, 2003
mugGet the Bulldog licking piss off a thistlemug.

piss thistle

Piss thistle; the unexpected attacking from under-growth when you go for an alfresco pee
"Snuck off for a cheeky leak, piss thistles everywhere!"
by gockaboodle July 23, 2014
mugGet the piss thistlemug.