Out of Context Comics

Native English speaker here, and I graduated with an English writing degree, so I'm a word nerd. Pluralization and apostrophe use is baffling in English, and even native English speakers frequently get it wrong. I've found a good general guide for apostrophe use here.

McDonald's is a brand name, so "We're eating at McDonald's" is proper. "Dingo" is also a brand name, used by OJ in the first speech bubble. Its plural would be "DINGOS". It would be like Stetson hats, which we could say that "We are wearing Stetsons."

Touch-and-go being a noun seems like a strange side case, but I found it in some dictionaries as airplane jargon. As such, I think it being hyphenated as "touch-and-goes" or "touch-and-gos" would be fine.

I think it's more likely that this is a phrase that should be reworded to be more clear. "Touch and go" seems like a phrase which could be made into a compound adjective if preceding the noun.

We survived several touch-and-go situations. -- Use of a hyphenated compound adjective before a noun.

The landings were touch and go. -- However, when separated from the noun after the verb, no hyphens.

I think rewording to avoid the weirdness is the best solution to make the writing clear. However if you encounter something like this in the future and get it wrong, don't worry too much. You're in good company. Native English speakers and writers get these rules wrong all the time, and the standard rules from experts have evolved over my lifetime.