The act of receiving a blowjob while taking a dump when you have a pinch of dip in. The term comes from the term "blumpkin" with the word bop meaning a pinch tobacco.
Dude, last night I was bopin and taking a dump when my bitch came in and started giving me head. I call it a "Blopkin", it was chill as hell.
by moneymike827 June 09, 2011