Wife and I have actually done a lot of cum-additive food play.
Into sauces, cakes, icing, drinks...don't know until you try!
Unfortunately she won't swallow straight from the fountain so this is the next best kinky/erotic thing.
I have, and it just doesn't mix like real cream. I rather suck it right from the tap, thank you!
Also - good coffee is really enjoyable after giving a good bj and swallowing the creme.
And, if he's up for giving me a sample in the morning, sometimes I collect it and put it in the bottom of the cup I put my lunch yogurt in. Nothing like having a nice blast of cum at the lunch table while eating my yogurt.