Mackerting is the art of wearing a shirt one size too small. While more often then not this shirt will be collarless and will feature a v-shaped neck, Mackerting is not limited to v-necks. It is possible to Mackert in any type of shirt including, but not limited to: t-shirts, polos, button-downs, soccer shirts, basketball jerseys, and henleys.
Dude, is Jakejuicing? His arms got huge overnight.
Naw, bro, he's just Mackerting; it's an optical illusion.
mackermoo is a term used for someone who always wins, pwns hardcore noobs, gets all the girls and gets more ass than a toilet seat. contrary to popular belief it has nothing to do with cows. Its also the gamertag of this guy i faced on xbox....i still have nightmares about that match
Did you hear about how hank made out with three different girls yesterday?