I prefer to tickle switches, partly for the challenge you know 😉
I guess it's partly a power thing, but I can't help but looooove reducing someone who's usually fairly cocky into a giggly puddle, especially when they've done it to me before.
Not that I don't like Pure Lees & Lers, sometimes i'm feeling vindictive, other times I want someone to tickle me silly, but generally I prefer tickling someone I know can (and will!) get me back. Means I have to tire them out more. :stickout
Alongside that, the panic on your ler's face when they realise you're coming for them after they let you go is a thing of beauty.