That’s right up my cup of tea

Not sure of the context on this one, but it it was uttered unintentionally, making it a nice malaphor.  It is a mix of “not (one’s) cup of tea” (not something one prefers or enjoys) and “right up (one’s) alley” (ideally suited to one’s interests or abilities).  The confusion I think is caused by two idioms that concern someone’s interests or preference. A big thanks to Joe Dolan for sending this one in!