Today’s phrase is not my cup of tea.

Explanation: If you say something is not your cup of tea, you mean it is something that does not interest you.

Example: Jane declined Oliver’s invitation to the opera, explaining it was not her cup of tea.

Origin: This expression got its start in the late 1800s when the British (who, as everyone knows, are very fond of their tea) started saying that something they liked was their “cup of tea.” Sometime in approximately the 1920s, the expression changed with the addition of “not” to indicate the opposite.