old story, something like "the three cosquillas", details in post

I'm looking for an old story that I thought I had somewhere, but it seems I don't. I believe the name of the story was "the three cosquillas" but I can't back that up. What I do remember though, is that the story is about a brother and a sister, who meet a three tickling enthusiasts.

The brother is horribly ticklish, and his sister loves tickling him (and tickling people in general). I can't remember the exact details, but they end up in the apartment of three roomates, two guys and a girl, who also enjoy tickling. The sister enlists the help of the three friends to tickle her brother, but the girl ends up feeling sorry for him, and agrees to be tickled in his place, and eventually she convinces her roomates to tie up the sister, and all three tickle her.

If anybody has a copy of this story, that would be great.

That sounds SO familiar... I have a bunch of stories I printed out back in the 90's. Lemme looksie.

I just looked through what i have and apparently not. The title and content of this story sounds really familiar though... maybe I just read it at some point.