There's a game in which the idea is that a questioner tries to trap the player into saying "Yes" or "No" by firing a lot of questions at them.

It doesn't work too well when the person being asked the questions is Irish, because, even in people who are several generations away from speaking Irish, the tendency to avoid saying "Yes" or "No" tends to persist - even where there is no discernable Irish accent. Quite unjustly, it tends to be taken as being a bit evasive. Looked at the other way, a naked "Yes" or "No", instead of "I did" or "I do not", or whatever, sounds a bit abrupt and even discourteous.

There are other languages like this. In fact Latin doesn't have "Yes" or "No" as such either.