Mr. Grubby,
Always an amusing thread. Great fun to try and guess some of the types.
As GROSSER hasn't celebrated his victory, I hope he won't mind if I post this to keep things going.
When the challenge is correctly guessed, I'l then defer to GROSSER so that he can put up a challenge.
This one (remarkably after 4 years) doesn't appear to have been on before.
I'm sure it won't last too long though.
BSD.