Yum Yum Fingers

after fingering your best gal, your fingers look like your just eaten a glazed pastry treat know as a Yum Yum.

Buddy 1: You were away for ages buddy!
Buddy 2: Yeah man, I had Yum Yum fingers after fingering banging her for 1/2 an hour.

Beef harmonica

The opposite to the gentlemans skin flute(penis)...

A womans tuppence (vagina)

Buddy 1: that chick last night was crazy, she knew how to play a great skin flute and I only lasted a couple of bars of the music sheet before I was done

Buddy 2: did you reciprocate and play her beef harmonica till her shoes were sodding?