Learn English – I don’t get this joke. Sentence seems like nonsense to me

jokes

So, I was at the bar last week,

Behind the bar they have these signs with jokes on them. One of them said "If your drinking to forget, please pay me first"(This isn't the question, I get this joke).

Somebody at the bar, noticing it, said to the bartender: "I don't have a drinking to forget, but if I did, what about it?".

The bartender, looked confused, and then the guy pointed to the sign. The bartender still didn't get it, and he laughed at her.

But I didn't get the joke either. This sentence doesn't make any sense to me. Why is it funny?

Best Answer

He was pointing out the incorrect use of your vs. you're. The sign uses the possessive your, indicating that they're referring to a "drinking-to-forget" that somebody owns, rather than the contraction you're which would be correct, i.e. "If you are drinking to forget...".