An estimation. Stands for "scientific wild ass guess." Primarily used among the military, especially snipers when they are taking a shot and need to calculate proper bullet trajectory.
S scientific
W wild
A ass
G guess
S scientific
W wild
A ass
G guess
Spotter: Shit there's our target. Calculate wind, distance, and bullet trajectory.
Sniper: No time, I'll just SWAG it.
Sniper: No time, I'll just SWAG it.
by turtlegates December 31, 2009