Sentence:  Some crystal users report that the combination of increased anal sensitivity and <WSD>crystal dick</WSD> tends to make them “instant bottoms” (Frosch, Shoptaw, Huber, Rawson, & Ling, 1996; Heredia, 2003). 
Meaning of the word marked with <WSD> tags:  Erectile dysfunction caused by methamphetamine use or other drug use.