It's a japanese term for hitting the wall. "Kabe" means "wall" while "don" is a sound effect for hitting
something. There are two definitons of this word:
-In romance anime it refers to a situation in which a
guy slams his hand against the wall, pinning a girl against it. The
guy is usually doing it out of an intense emotion
like jealousy or anger, but sometimes it's just flirtatious.
-In general it refers to a situation in which a character hits the wall. Eventually there is some property damage. Usually it involves the main character when they can't fathom the injustice being
done upon someone else.
It doesn't have to be only in anime but in real live it's just not that common.