Four out of five of my piggies are, or were kissers. Pooper wasn't by any stretch. He kind of had a bad attitude for the most part which is probably why I loved him so much.
Sly was a nervous pig, and when he REALLY wanted his salad he would sit beside me and lick my leg or my knee. That was the only time.
When Scooter was a baby, he would kiss on the lips but he's grown out of it. He still gives the occasional kisses.
Punkin would sit on my chest and stare at me. I would say, "Give daddy kisses" and then I would pucker up, and more often than not he would start kissing me. I even managed to catch that on camera once!
Leo is the same way. He'll sit on my chest and I'll make kissy noises and he'll start kissing back. Hes done that from the day I brought him home in December.
More often that not its licking, but Scooter will sometimes just put his lips against my skin and kind of snuffle his lips there. It's just the most adorable thing in the world.