It is almost seventy year since I last played cribbage.
Mr. Dick Swiveller (is that a play on swive-ler?) having been so sick he was out of contact for many days, comes to, to find a girl he called the Marchioness playing cribbage by his bedside. She plays a jack and fails to take score.
"The Marchioness dealt, turned up a knave, and omitted to take the usual advantage; upon which Mr Swiveller called out as loud as he could--'Two for his heels!' "

I never heard that call before. We had a post about this several months ago, but it would be hard to find. I have heard it call "his nibs" and also "his nobs". What do the calcaneus bones have to do with it?