Eating at Mona's
Discrete reference to oral sex used in professional or formal social settings, or when you want to say something with a little more class than "eating pussy." Any name may be used, but Mona - as in moan - helps eliminate uncertainty. Variations include 'Dining Out/Eating Out at Mona's' or 'Getting takeout from Mona's.'
BIll (talking to Mike at office staff meeting): Hey, Mike, sorry I missed your call last night, I was eating at Mona's and couldn't get to the phone.