get off on (something)
1. slang To be or become particularly excited by or enthusiastic about something, especially in, or likened to, a sexual manner. It seems like Kaya gets off on the power of her new corporate management role. I don't know why you get off on going to the gym every day—it just seems like a chore to me!
2. slang To become high from taking a particular drug. I guess I don't inhale well because I never seem to get off on pot.
get off on
1. Feel the effects of or take a mind-altering drug. For example, He was getting off on crack. [Slang; 1930s]
2. Enjoy, derive intense pleasure from, as in I really get off on good jazz. [Slang; c. 1970]