one’s bag

(one's) bag

slang Something one particularly prefers, desires, enjoys, or cares about. Often used in negative constructions. Thank you for the invitation, but long-distance cycling just isn't really my bag. I knew classic literature was your bag, so I thought you might like this book I found.
See also: bag

one’s bag

n. one’s preferences; one’s talents. Hey, Tom, what’s your bag? What do you like to do?
See also: bag