(adj.) Below the line of what is acceptable behviour. Used to describe an insult that was a little extreme, but comes from physical fighting where Queensbury rules and broughton's rules dictate that no punches are to be thrown below the belt.
Synonyms for below the belt
On this page, you will find 30 slang terms related to below the belt. Some of the top words include: chuckle fuck, hellish, Poon, disrespecting, ReZnore, and 25 more.