A kiss from Vio

Ok, not exactly a kiss, but more of a "suck" hahaa.. Pi and I likes to "ask" Vio to kiss us by putting our cheek to his lips and say "kiss daddy kiss daddy" or "kiss mommy kiss mommy". Normally he won't do anything other than opening his mouth wide. But last night, he suck our cheek! haha.. feels like he's kissing us..