catch oneself on

catch oneself on

1. (Ireland, colloquial, chiefly imperative) To stop being silly; to behave in the proper, expected way.
   • 2011, Colin Neill, Turas: A Story of Strangers in a Strange Land, page 68:

     "Big Pat's still wearing his hair like two floppy ears on a dog. He's amazing: wouldn't you think his wife or someone would tell him to catch himself on."

• catch on