PEWPEWPEW 

The sound made when shooting an imaginary weapon.

omgkittensmewmewmew!! Get them! PEWPEWPEW!!

Commonly used when referring to the likely hood of kicking butt in World of Warcraft.

PEWPEWPEW by Clint Payton January 11, 2006

i pewpewpew'd your ass 

phrase....created by someone very tumblr famous... used on a Vincent Castronovo Facebook Hater

person1-i will kill your favorite celebrity

you call the cops and person1 gets arrested

you-i pewpewpew'd your ass!

i pewpewpew'd your ass by JOswag July 29, 2011

pewpewpie 

The Cutest human being ever born on Earth.
#Rimi

I just had a wonderful day with my pewpewpie.

pewpewpie by Amyfin July 8, 2014