The origin of Anchor Ass originates from the England. The fist Ass to be labelled ‘Anchor ass’ was discovered around the mid 90s. Anchor Ass essentially refers to an Ass which is 'rock solid'.
For example, anger at a person may provoke attacking the person. If for instance the Ass in particular is attacked and causes serious injury to the attacker, then the Ass must be referred to as Anchor Ass. “Dam! You got an Anchor Ass”.
by Dhadda February 26, 2009