My navel was licked out, but I didn't want it!

Sorry for my bad english! So, I'm a 21 years old girl, and at a party, a random guy found me alone in the backyard toilet, he pushed me down, and stuck his tongue into my navel, licked it, and slapped few times my underbelly, grabbed the fat on my belly, so that was a classic female/male physical strength situation, and this is really annoying!!!!!!!!!!!!!

Not yet :/ I'd feel myself redicolus, and my roommate told me that my navel is pussy-like (deep, folded... etc. ), and not a surprise if someone want to penetrate it. I feel embarassed!