Cody Nickson joked about having another baby with his wife, Jessica Graf, next year.When an Instagram user asked the Iowa native, 35, what he’s “most excited for in 2021” on Thursday, December 31, the Last Fitness Strategy author replied, “Getting my wife pregnant again.”Nickson added, “I’ll tag her so she can slap me later. Ha.”The Big Brother alums welcomed their daughters Maverick, 21 months, and Carter, 2 months, in March 2019 and October, respectively.