It don't mean a thing if it ain't got that ping.
Part of the fun of pool is using strategy to your advantage and your opponent's disadvantage. Your opponent had a turn at the table, that was their chance to control the table from a strategic perspective. They should have ran out or arranged balls instead if they wanted to moan about you legally pocketing their ball. I love the idea of getting to choose my opponent's last pocket and them getting to choose mine if I fail to strategically not let them do so.So if opponent makes his second to last ball in side pocket or his Last ball is by side pocket I’m going to make his ball in side pocket.
Intentionally making opponent to have side pocket as his last pocket should not be allowed.