Feeling a little randy (bit naughty)

Feeling randy, I phoned the wife for some hot phone sex.

"Tell me if you're wearing any knickers," I said.

"Actually, I'm not," she replied.

"Ooh, you mucky little minx. What are you doing?" I asked provocatively.

Spoiler:

"Having a sh*t," wasn't really the answer I was looking for!