hi i am 35 married f work at a local high school and clean up after the students get done for the day. I was cleaning were the cheerleaders have practice after school, well as I was walking by to go clean another area 3 girls had this one girl pinned down and was tickling her ribs and her barefeet. and she was hysterical they stopped as I walked by I said you don't have to stop on my account, but another thing that works really well is an ink pen for the bottom of her soles if you really want her to giggle and laugh so one got up ran to her purse and got out a pen and they worked over her soles with the pen now i know from past experiance ink pens are helll and from where i was cleaning i could tell it has same effect on her as it does on me then after a while they must of got bored or somebody else walked by cause the laughter stopped and I went back to cleaning rest of the school. goes to show never let anybody know your ticklish unless your ready to laugh if they find out