Prescriptive vs Descriptive linguistics

Quick lesson on descriptive vs prescriptive linguistics. Prescriptive linguistics states that there is an explicit set or rules about language that people should follow. Descriptive linguistics states that the rules themselves are defined by how people use language.

A classic example is the phrase "can I go to the bathroom?"

A prescriptivist would argue that the word "can" doesn't fit here because unless there is some medical condition, of course you "can" go to the bathroom. Thus the word should be "may".

A descriptivist would argue that "can I go to the bathroom" is just fine. There is no real ambiguity of meaning. It's a very commonly used phrase, and thus it is correct.

Do you consider yourself a prescriptive or descriptive linguist?