Masta Blasta 

adj; A term used to describe someone who's quite exceptional at whatever they do, regardless of what it is.

Yo! He's a Masta Blasta at Pacman! Look at him snag those little dots!

Masta Blasta by Jin Saotome May 14, 2005

masta blasta 

sexual term; A masta blasta or master blaster is when you have the biggest ejaculation in your your entire life. Usually happens on face but in other words, biggest load you ever had

dude 1: Dude i did a masta blasta on my girlfriend yesterday she almost drowned.

Dude 2: You have to be more careful one more like that and she will drown.

Dude 3: OH SHIT

masta blasta by moshi182 June 18, 2009