Green’s Dictionary of Slang

1. (US) excited, full of something, usu. oneself.

1971		Current Sl. VI 8: Pumped, adj. Excited.
1991		(con. 1920s) O.D. Brooks Legs 90: The thought of running a pool room by myself three hours a day, seven days a week, had me so pumped up I hardly slept.
1992		J. Mowry Way Past Cool 265: Crack was intense, but cruelly quick. On top, where the boy had been a minute ago, you were pumped to the max.
1992		M. Coleman Fatty 119: Penrith were pumped up for the biggest night in the club’s history.
2007		T. Dorsey Hurricane Punch 4: Can’t tell how glad I am it’s hurricane season again. I’m so pumped!
2015		L. Berney Long & Faraway Gone [ebook] She was so pumped. She was going to get a job.
2016		Eve. Standard (London) 24 June 72/3: The striker remains a huge influence on the squad and has already got his team pumped up for the game.

2. (US campus) drunk.

2001

Eble Campus Sl. Fall 3: intoxicated [...] Also pumped up.