Used to express surprise, shock or amazement.

Belonging to me. / Associated with me. / Related to me. / In the possession of me.

(dated) An extension of my! used to express surprise or pleasure. Also "my my my!".

Relating to muscle

Initialism of motor yacht (diesel-driven yacht)

Alternative letter-case form of my often used when speaking as God or another important figure who is understood from context.

megayear

Indicates approval at someone who is doing something praiseworthy.

plural of MY

(colloquial) It's none of my business; indicates that one is not responsible for controlling or changing a volatile or delicate situation.