Ally McCoist couldn't resist taking the bait when Adrian Durham goaded him over the everlasting 'penalty to Rangers' debate.
Spot-kicks were the talk of the town on talkSPORT after Durham hinted on his Saturday show that things fell kindly in Celtic's favour during their 2-0 win over Hearts on Saturday.
The Jambos were initially awarded a penalty for handball on Liam Scales before it was overturned after a VAR review, only for the reverse to happen in the second half - ref Colin Steven initially not penalising James Penrice for handball, but pointing to the spot after checking the monitor.
The usual grumbles emerged about the Glasgow sides often getting the rub of the green at home, something many fans outside of the big two often voice after games at Parkhead or Ibrox.