load up

verb

1. To fill (a vehicle, vessel, room, etc.) with a load of cargo or similar.

   “We loaded up the wagon with supplies.”

2. To load (things) as cargo or similar.

   “Q: What should we do with these other boxes? A: Load 'em up, same as the others.”

3. To receive a load of cargo or similar.

   “The wagon halted for an hour to load up with supplies.”

   “Let's stop at the off-licence and load up on booze and snacks.”

4. To fully load (a weapon).
5. To load (software) fully into memory.

   “The game loaded up and he instantly grabbed the game controller.”

6. To intoxicate oneself with alcohol or drugs; to get drunk or get high.

   “John Bender (Judd Nelson): You load up, you party… Brian Johnson (Anthony Michael Hall): No, we get dressed up, but we don't— we don't get high.”