United Kingdom, May 22 -- Jessica Biel's son refers to her as "John Cena's friend".

The 43-year-old actress - who has Silas, 10, and Phineas, four, with husband Justin Timberlake - admitted her kids think she is "so lame" but she got "some cool mom points" by filming 'Matchbox' with the WWE actor.

Speaking on 'The Tonight Show Starring Jimmy Fallon', Jessica said: "They love him. They love him, and he's so nice. He's a lovable dude, and they are just crazy about him."

To prove how "crazy" the boys are about the 'Blockers' star, Jimmy produced an "all about my mom" worksheet which Phineas had filled in for Mother's Day.

On a section that began "my mom is", the youngster had shunned descriptors such as "an actress" and instead wrote "Jo...