(adj.) It literally means someone who is uncircumcised but is also used as an insult, usually by men, to demean or mock a man's skills.
"Isasama ba natin si Paulo sa shooting range?"
"Huwag. Supot naman 'yon."
"Are we going to invite Paulo to the shooting range?"
"Don't. He's uncircumcised anyway."
Submitted August 2020