The star's three-year-old son Camden is far from impressed with his father's chart-topping past, and couldn't care less about 98 Degrees' upcoming reunion tour, which was announced on Monday (25Apr16).
"I sing around the house and my son tells me to stop!" Nick told Entertainment Tonight. "He says, 'Daddy, stop singing'. I go, 'Do you understand that people used to pay daddy - and hopefully will again - to sing?' He has no clue. He has no concept."
Lachey, his brother Drew and their bandmates will be hitting the road with Ryan Cabrera and O-Town for this summer's (16) My2K Tour.
"It's just gonna be a great trip down memory lane," Nick said, while Drew added, "We'll dust off some dance moves... We're gonna put on a good show with lots of energy."
The tour will mark the 20th anniversary of 98 Degrees first signing to Motown Records.
"We can still tolerate each other," Drew joked.
98 Degrees last reunited in 2013, when they toured the U.S. with Boyz II Men and New Kids on the Block.