piss artist

Noun

Meaning

(Britain, slang) Someone who is frequently drunk (pissed).

(Britain, slang) Someone who pretends to be knowledgeable on some subject.

(Can we verify this sense?) (Britain, slang) Someone who frequently ridicules others (takes the piss).

piss-artist (plural piss-artists)

Alternative form of piss artist

Source: en.wiktionary.org

piss-artist