Eat the coffee cake, after inspecting the cake more closely. Ants in my house do not peg my “ew!” meter.
(Unlike the huge cockroach I encountered in my office this morning - ack! I captured it for the exterminator, who agreed with my theory that it had probably been brought over in someone’s bag or something, and crawled under my door to (unsuccessfully) look for food sources.)
I don’t have a spouse. If I did, and she wanted coffee cake and wasn’t squeamish I’d tell her and let her have it. If I did and was squeamish, I’d tell her and eat it myself. (Actually, that assumes that I liked coffee cake enough to eat it. However, being on a diet, I would never blow my allotted calories on something as mediocre as coffee cake.)
A single ant would not deter me from eating it, although I would definitely inspect it very thoroughly first. I wouldn’t give it to my husband without telling him about the ant, but I doubt he would care either. My kids would eat it ant and all.
This hypothetical ant would be one of those big black ones, right? Those ones are okay - I’d definitely check the cake/surrounding area to see if it’s the only one. I’d probably eat the coffee cake if I were in the mood for it.
I’d have trouble killing the ant - it’s like a certain level of intimacy has been established. We’ve shared a moment; we both like cake. I’d probably set the ant outside somewhere before tucking in.