Trike Dope is a person who all they care about is driving their Trike and smoking Dope. Usually between ages of 13-18.
Buddy 1: Are you going on Trike after school? I got some dope.
Buddy 2: What about our homework?
Buddy 1: Who cares about school.
Buddy 2: You're such a Trike Dope.
"P-dope" is a term used to refer to methamphetamine synthesized from the precursor "P-2-P". This precursor was heavily restricted in the late 1980s and methamphetamine cooks moved to other precursors such as ephedrine and pseudoephedrine. Older speed freaks frequently recall the "p-dope" era and compare the product to the current forms of methamphetamine.
"I used to love that bike club p-dope - but gimme some see-through shabu anyday!"