A great Canadian euphemism for solo masturbation, or the act of pleasuring someone else.
Jack: What did ya get up to today, bud?
Fred: Oh, yenno! I woke up early, had to boop the loon, throw myself together, smoke a dart and then head off to work!

Or

Jack: So, what did you do with Maggie the other night?
Fred: Well, as the good gent that I am, I spent an hour or so booping her loon, then afterwards we went for a rip to Timmies, grabbed a box of Timbits and we sat down and ate them on the chesterfield watching the hockey game.
by golfdaddy69 March 14, 2019
Get the boop the loon mug.