We were at a National Trust property, recently, and decided to have lunch. A sign said: Please tell us if you have any food allergies...so I told the gentleman who served me..."I'm Coeliac."
Seeing the fleeting 'blank' look that crossed his countenance, I elaborated, "I cant have anything with flour, but it's okay anyway, I'm having a baked potato with cheese, so my only concern is
cross-contamination."
He assured me that the tongs were, as yet, unused, so there wouldn't be a problem, then called out to the other staff member...
"One baked potato with cheese, please Mabel...and be careful...the lady is a CELERIAC!
Boom, boom