in (one's) glory(redirected from in their glory)
in (one's) glory
In one's happiest or most fulfilled state when in the midst of a certain activity. Look at John flipping through all this used vinyl. He's in his glory right now. I think my mom was in her glory at the quilt convention. I've never seen her so giddy.
in one's glory
Fig. at one's happiest or best. When I go to the beach on vacation, I'm in my glory. Sally is a good teacher. She's in her glory in the classroom.