Ambulances and Gay Men

Okay, genius. You thought that was funny? So here's the deal, you see, the author of the joke thought it would be hilarious to compare gay men and ambulances, like, they have something in common because they both experience something in the back. And 'whoop whoop' is like, the sound the ambulance makes. It's supposed to be kinda naughty or something, because of 'take it in the back'. You get it? You're probably too stupid to get it.