be right up (one's) alley(redirected from you are right up someone's alley)
be right up (one's) alley
To be ideally suited to or perfectly aligned with one's interests. I really like Romantic poetry, so this class on John Keats should be right up my alley. Anna loves watching movies, so I'm sure she'll go to the film festival with you—that's right up her alley!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
right up one's alley, to be
To be in one’s particular specialty or to one’s precise taste. The word alley has long been used for one’s special province; Francis Bacon so used it in his essay Of Cunning (1612): “Such men . . . are good but in their own Alley.” Up one’s alley, however, is a twentieth-century turn of phrase. Margaret Carpenter used it in her novel Experiment Perilous (1943): “It isn’t up my alley at all.” See also not my cup of tea.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer