To experience or unleash an intense bowel movement. To leave a large quantity of waste into a toilet.
Steve: I can't believe how many beers I had last night
Brad: Sounds like you had a good time Steve: Last night was great but now I have to go take a fuckin growler.
exhibited by guys at the more masculine end of the spectrum, as distinct from squealers.
aw man, i fucked this guy last night, he was such a growler i had to press his head into the pillow & fuck 'im harder so the neighbours couldn't hear him.