Coffee cake. I'm not sure this is strictly a US-UK thing though...
In my universe, coffee cake is one of those streusel-ly type cakes that you eat
with coffee. So when DH offered to get me a slice of coffee cake, I thought - lovely! Only it was coffee flavoured cake instead.

I like drinking coffee, but I don't like coffee flavoured things - not coffee flavoured cake, not coffee flavoured ice cream, etc. Blech. Chocolate covered coffee beans are okay because that's real coffee, not coffee flavoured...
I'm sure there are others, but that's the first one that came to mind.