The 27-year-old, who spent seven seasons at Victoria Park before joining the Cumbrians in June 2009, scored a late winner in the game.
"The Pool fans had a full repertoire of songs about me," said Robson. "I think they must have written them all down.
"I couldn't stop laughing because some of them were brilliant. The best one was when they sang 'Your chin was offside'. I was in bits when I heard that.
"But I was the one who had the last laugh with the goal."
Robson has scored 14 goals in 143 first-team appearances for Carlisle.