when a girl has facial hair above her upper lip
yo that chicks mac nasty had more hair than my mustache
από kazzilla 20 Μάρτιος 2010
One who thinks he or she is a tank when drinking (When he or she is not) then they think they are very cool, when there are not. They disrespect women and do not know how to pleasure them because they turn gay and smell funny and they hook up with people from a different race.
Dude stop you have only had three beers your being a Macnasty.
από Jason Yard 12 Αύγουστος 2006