One who has reached an expertise level with his frag grenades
from the video game series Call of Duty
A true frag master has the ability to cook their frags, throw them over a building, bounce it off of an enemy in last stand, kill them direct impact
, and have the blast explode in a minimum of but not limited to three enemies faces rendering them all incomparable of remembering why the even bought the game.
*Player killer by grenade and watches killcam
Player: AWW WTF!?! That nade
bounced off 3 different people in last stand
then fell and killed me!!!
Killer: I am the Frag Master!