Ashitaka (from Princess Mononoke) is tickled by Nausicaa (from Nausicaa of the Valley of the Wind)

Beardless Homer Simpson

Nebraska

Sheeta is tickling Pazu's feet

Gunsword

Ah-ah-ah-ah-ah-ah-ah

Sheeta (from Castle in the Sky) says "I'm gonna get you, Pazu" and tickles Pazu (from Castle in the Sky)

Teethless Venom

Hulk's hairless!