Kevin Federline to mock Britney big time!

Kevin Federline is set to mock his ex-wife Britney Spears as he appears in hit TV show 'One Tree Hill'.

The 28-year-old - who is currently fighting the 'Toxic' singer for full custody of their two children, 23-month-old Sean Preston and 11-month-old Jayden James - will play a singer who tries to help a drug-addict mother win back her kids from social services.

However, it is soon clear that while the mom loves her children she is not suitable to raise them, and sources claim this echoes his thoughts about Britney.

A source said: "Kevin is fighting for sole custody of their sons, claiming Britney's wild lifestyle and bizarre antics make her an unfit mother.

"And art will mirror life to his advantage in this TV role. The poor mom will be shown in a sympathetic light, but it will be clear why she is not allowed to care for her kids. Kevin will appear as the sexy knight in shining armour."