No skin off my back

Meaning

This means that a situation or decision does not bother you or affect you personally in any way. It expresses a sense of indifference or detachment.

Dismissive, casual

Used in a sentence

• If you want to wear that neon suit to the wedding, go right ahead, it is no skin off my back.
• You can skip the staff meeting if you really want to, it is no skin off my back.
• Mom said if I wanted to sell my old bike for five dollars it was no skin off my back.