pew! is the word for the sound of futuristic guns, because they actually go like "piiuu".
for example laserguns are doing the "pew!" if you fire them
by ahand September 12, 2006
1. Used to imitate the sound made by firing a gun; specifically a laser gun (esp. a Stormtrooper rifle).
by LaunchOverIt August 3, 2005
When something is so terrible or cringe you have to make a gun sign , point it to your head and say pew pew pew motherfucker!
Bob: hey guys I just rolled a phat old spliff
*skinniest joint you’ve ever seen*
Katie: wtf pew pew pew
by Stoner_katie August 30, 2018
1. Sound made by lasers, usually related to star wars.

2. Owning a person, usually related to world of warcraft
"wow those lasers sounded like pew pew on the surround sound"

"dude you just pew pew his ass down!"
by Aoshi May 29, 2006
Two or more sound effects mimicing the sound of a gun firing, sometimes made in conjunction with turning your hand into a gun. These can be loud or soft, depending on the size of the gun in question.
I'm a cowboy! Pew-Pew!
by Steph Dybastion-Scott April 13, 2011