I have really had the curling iron slip out of my hand and scorch my neck and everybody thought it was a hickie. Looks exactly like one, only when the scab would start to peel away would they believe me, that it was a BURN!

Best way to hid it is to not get it to start with.

I have seen as a joke, a group would hold someone down and put one on them and leave them to explaine to their parents how they got it.