I think my favorite idea of tickling is getting a back massage and then as the masseuse gets near the sides it causes giggles. Then they ask you to turn over and massage/tickle your stomach. Not a huge fan of tickling really fast and hard. I think it's more fun when it's slower because it causes more squirming. Years ago I had a GF who loved tickling. Haven't been a tickler or ticklee since then though.