I ran across this technique by accident the other night - a girl who I was preparing to escalate on mentioned in passing that she is really ticklish, so I decided to test it out. Tickling her provided me an excellent reason to have my hands under her clothes, and she was excited to rip off my clothing as well so she could tickle me. When I was feeling too ticklish, I would distract her with a passionate kiss. All in all, I thought it was a lot of fun and a great way to switch up my escalation routine.