Michael Caine.
In the 1960's Michael Caine held a stag party. He invited a some old strumpet to entertain the male guests giving her strict instructions.
The strumpet went in to a bedroom and gave Jim Morrison a blow job.
She went to the next room and gave John Densmore a blow job as well.
She then went to the third room where she gave Ray Manzarek some serious fellatio too.
Finally she went to the last bedroom and starting sucking Roger Daltrey's willy.
Michael Caine burst in the room and shouted....
"You were only suppose to blow the bloody Doors off!!!"