Gabang could be short for gangbang but is mostly used as an enforced version of banging. Like, ka-pow, or be-jesus.
"I gabanged her 'till my schlong could rise no more"
"She wanted to make love but I was so phorny I gabanged her puss 'till it foamed"
"She wanted to make love but I was so phorny I gabanged her puss 'till it foamed"
by xtrasyn November 2, 2006