Why do people make the "smooching" noise when kissing?
Why do people make the "smooching" noise when kissing? It seems like it takes at least a little intentional effort to make that noise. Is it weird to make out but not make the noise?
Well, a kiss involves some degree of suction, no matter how small. Otherwise, it's a peck.
Besides, part of the kind of kiss that smacks is performative. The people involved are using it as a form of social bonding, so the sound is intrinsic to the exchange. You won't usually find adults making out with closed mouth kisses and making extra noise. It's really a different thing.