1-Pumped

1 Pumped
adjective

Pronounced:
(one-/pʌmpt/)

What it means:

The pump shotguns are one of the most powerful weapons in Fortnite, especially when it comes to headshots. As a result, it’s possible to knock or eliminate an opponent with a single shot from this weapon. When this happens it’s called being one-pumped. 

Use it in the game with your squad:

“Oh no this guy just one-pumped me, can anyone come help?”