occupation grunt
A loud, rude sound someone makes in the men's room when they hear another guy walking in. It’s like they’re saying, 'I'm still here, and I’m not done yet.'
'I'm still in here, and I'm not done yet!' he bellowed.
'You're not getting in here, I'm still peeing!' he yelled.
'If you try to open that door, I'll come out and punch you.'