To engage in, more specifically "Dabble in the dark arts." This means you are involved in consumption of alchohol and/or smoking of marajuana and any other drug.
1. Hey man, this saturday want to dabble in the dark arts?
2. Does he dabble in the dark arts?
3. Now that your mom is home no more dabbling in the dark arts.
To occasionally partake in things; particularly things not considered "right" or "legal" (i.e. illegal substances or sexual acts/partners).
A dabbler is not addicted or dependant on the drug or sexual act, just occasionally likes to try different things to spice up life experiences (i.e. "head change")
"Sure, go ahead and pass me that joint. I dabble with weed." >OR<
"I'm in Vegas, I think I'll try and get a hooker. No, I'm not a lesbian... but I'm a dabbler!"