the action of taking a foreign substance, that causes a change in a person's consciousness or normal body action, in an excess or large amount. (i.e., caffeine, alcohol, marijuana, any illicit drug)
1: Hey bro I got some drugs, we're about to pipe up.
2. I'm about to pipe up starbucks, want anything?
3. I'm so tired, lets pipe up some adderall.
4. Damn I am very piped up, I drank so much beer