Proverb - One might as well be hanged for a sheep as for a lamb

One might as well be hanged for a sheep as for a lamb:

If you are going to be killed for stealing a lamb, then why not steal a sheep (which is bigger and more valuable)? In general, it means that if you are going to get the same punishment, you may as well commit the greater offence.

Idiom - Black Sheep

Black Sheep:

If someone’s a black sheep, it means they are different from the rest of the people in a group or different from the rest of their family.