Baffled

As Marlene, the revered landlady down the local spotted Gobby in a corner one evening she could not help but declare,

"You must have been quiet tonight, I couldn't hear you were in!"

To which, Gobby ever complimentary conceded,

"You've got so many customers they must have been muffling me."

And, Billy Idle helpfully added,

"And those that aren't are queuing up to!"