Music mogul Simon Cowell is already teaching his two-month-old son Eric how to stick his tongue out.

The `X Factor` mogul's friend and former girlfriend Terri Seymour has praised him as a "really good" dad, but she has revealed that he is already teaching his son, who he had with girlfriend Lauren Silverman, some mischievous habits.

"Simon taught him how to stick his tongue out at two months. It's hysterical - Simon sticks his tongue out and Eric copies, he's so cute,` contactmusic.com quoted Seymour as saying.

She also says that fatherhood hasn't changed Cowell's jet-set lifestyle at all, but insists he has been a very hands-on dad apart from the occasional near-mishap.

She said: "He's great actually. I mean he hasn't changed his lifestyle because Simon wouldn't. But he's very good. He'd never even held a baby before, so he was like, 'How do you hold a baby?'"

"You have to remind him every now and then about the head...But he's really good and he loves it. Everybody was like, 'Oh my God, this is going to be so strange' but it's all been very natural,` she added.