It’s this commercial for Alka-Seltzer from 1997 with a voiceover by Sir Donald Sinden and the tagline Alka-Seltzer: When you’ve eaten something you shouldn’t have. Why do I like it? Because it’s so incredibly simple – and it makes me chuckle. I only ever saw it on TV once. But the fact that it remained ingrained in my memory is testament to the fact that, IMO, it’s a fantastic ad. (My only gripe is that I feel the final word – have – in the tagline doesn’t need to be there??) The Independent Television Commission received 40 complaints about the commercial because of the implications of cannibalism. Thankfully, the ITC didn’t uphold the complaints.