Tickle. She likes to sit on my lap and "tickle" my neck. And by tickle, I mean that she flaps her hands on my neck - sometimes too hard. During this whole tickling process, she also scrunches up her shoulders and tucks her chin as if I am tickling her neck. Sometimes, due to the scrunching and tucking, she can't see what she's doing, misses my neck and tickles my boob. Regardless, she finds all of it hilarious and says, "Ticka-ticka-ticka-ticka!"