A phrase exclaimed when a reference to something is made. Accompanied by the person who said "reference gun" making two finger guns with their hands and shooting them while simultaneously saying, "pew pew!"
Coined by Zoe Small.
Person 1: I did it in 10 seconds flat!
Person 2: That makes it 20% cooler! Reference gun, pew pew!
Person 3: There are giants in the sky! There are big tall terrible giants in the sky! Reference gun, pew pew!
Person 1: *Looks strangely at Persons 2 and 3.*