updated 05/03/2010 AT 2:00 PM ET
•originally published 05/03/2010 AT 2:25 PM ET
Turns out, her husband Nick Cannon’s grandfather gave it his best shot.
“When some good old-school music came on, he was dancing up on the floor with one of Mariah’s dancers,” Cannon said on his 92.3 WXRM-FM radio show “Rollin with Nick Cannon” Monday morning. “My grandmother was all upset and ready to go home because my 75-year-old grandfather was dropping it like it was hot with some youngster.”