Terms for subject Ironical containing be on

English	Russian
be on	быть подшофе (igisheva)
be on a roll	оседлать своего любимого конька (My mother loved to gossip, and she had a hard time stopping once she was on a roll. • Not only can he tell you where this is going, and how you'll get there, but there's simply no stopping him once he's on a roll. 4uzhoj)