Someone who steals for petty reasons, which technically is
theft in general, because any authentic justification of theft would
disqualify it as theft.
A "real thief" is
theoretically, according to this logic, someone who only steals from petty thieves. But a petty thief is just as capable in principal of stealing from a "real thief".
Which one of
y'all is the petty thief that just stole my
cigarette butt?