I was 11 yo when this happened, and my cousin was 10 yo.
He was in my house for a cople of days, and one day we get bored and we have the idea of make a movie and in this movie I was the villain and I kidnapped the hero (my cousin).
First, I took one of my dad's turtleneck sweater and I put on him.
_Why I have to wear a sweater?
_Because the rope will mark you skin.
_Okay...
Then, I tied his wrists behind him with rope and sit him on a chair. When I started to tied his ankles, he said:
_This hurts, take a pair of socks and put on my feet.
So I take one black long socks and put on his feet. I continued to tied his ankles.
I tied two socks together and I stuffed the knot into his mouth and tied behind his head.

_Hmmmmmmph.
_Shut up! Or I will stuff dirty socks in your mouth!
Then I took a beanie and blindfolded he with it

_The fun started! - I said.
I took his socked feet and started to tickle him, he laugh a lot and started to struggling

Then I started to squirm his whool covered nipples, he cried a lot

I untied him and said:
_DO you liked this?
_I LOVE IT!