Cole the comedian! He is either kissing your knee and saying, "Mama you are so sweet," or he is licking your leg and laughing because he is saying, "Mama, I slimed you with doggie drool!" Your choice or it could depend on Cole's day. Romeo likes to give you a little kiss on the back of your calf (probably because he couldn't reach our knees unless he had a step ladder).
Aren't we lucky our animals love us??!! One of my kittens likes to knead (that pinching motion) my neck, preferably in the middle of the night. I hold her paws to get her to stop and we have a little cuddle before I make her go and find her sister to curl up with.