When to Use "Who" and When to Use "Whom"

A hilarious look at grammar. This comic strip clearly illustrates when who vs. whom needs to be used in a sentence.

In short...

If you're asking about the subject doing something, then use who.

If you're asking about the object doing something, then use whom.

Read to the end of the comic to see why in the world you would use whom in the first place. Very funny, but incorrect, of course.