My date with Bob was wonderful, fine dining, dancing under the stars, and a delicious breakfast back at his place the next morning, but he left out the part about the ass massacre! I'll never go bottoms up with him again!
A Serbian ass massage is a sexual pleasing act in which a male(or female) companion sticks their thumb in your rectum and stimulates your "male G spot" while also massaging your balls and *optionally* giving you a handjob or a blowjob.
P1:Kyle told me he got a serbian ass massage by a random chick last night.
P2:Imagine how good it feels.