I can be faithful to your title, Beck.
Three years ago - the first time we had Trep Jr’s then-girlfriend staying. They arrived on Christmas eve, and the plan was to have a special evening meal together (as she was a nurse, she was working Christmas day). As dinner time rolled around, I felt less and less hungry, to the point where eventually I had to say, you guys go ahead and eat - I’ll see if I fancy something later.
It was just at the moment they were starting to eat that I literally ran past the dining table to the bathroom, barely getting there in time to start 48 hours of vomiting and diarrhea. I was too ill to even risk going to bed that night, sleeping in a chair with a bucket by my side. Pharmacies were closed, doctors’ surgery closed… in the end Trep Jr’s girlfriend was detailed to “obtain” some oral rehydration stuff for me when he dropped her off for work in the morning. My Christmas Day feasting was limited to several glasses of Dioralyte. It truly was a bad, bad, bad Christmas.
Glass half full moment - I lost a kilo over the holidays that year. How 'bout that? 
j