ezioxauditore asked: It must be a Lab thing, since my Lab does that too. Like, everyday. I'm like, "What are you DOING, Emma?"
When my brother and I were little we would get Sam to do this by spraying Binaca mint-flavored breath spray on our hands and letting him lick it or by spraying it on the grass near him. For some reason the mint smell/flavor would make him act really silly and roll around.