I didn't actively search for it, it's just that one click lead to another, and another, and then I reached, well.... that.

It's involuntary, I can't control my sweat, but you're totally right, I'll wank it in the bathtub or something next time. I replace the bedsheets, but with the couch and chair, I have no excuse. I only used each of them twice to wank though, so it's not like a regular occurrence or anything.