not be somebody's cup of tea
be not (one's) cup of tea
To not be something one prefers, desires, enjoys, or cares about. Thank you for the invitation, but long-distance cycling just isn't really my cup of tea. When I found out that reading wasn't his cup of tea, I knew that there wasn't much of a relationship in store between us.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not be somebody’s cup of ˈtea
(informal, spoken) not be the kind of person, thing or activity that you like: He invited me to the opera but it’s not really my cup of tea. OPPOSITE: be (right) up your streetFarlex Partner Idioms Dictionary © Farlex 2017