I'd double tap that.

This comes from 'I'd tap that' but this person is so ugly you'd rather shoot them twice just to make sure they're dead. Like a zombie that won't stay dead.

You're so repulsed by someone you'd tap them once and then tap them again just to make sure they're not coming back. Like a ghost with no respect for the afterlife.

So bad you'd tap them once, then tap them again because you're that mad. Like a broken vending machine that won't give you your snack.