Former Playboy model Jenny McCarthy has slammed Tom Cruise's infamous couch-jumping act on The Oprah Winfrey Show last year, insisting the bizarre routine was proof of a mid-life crisis.

The buxom blonde insists 43-year-old Cruise's over-enthusiastic display of his love for fiancée Katie Holmes, 16 years his junior, was his way of showing his age has not affected his allure with young and attractive women.

McCarthy says, "You realize so many things in your twenties that it takes until you're 30 to know who you truly are.

"You move on and get older and go through a mid-life crisis or a Tom Cruise crisis.

"Some guys buy Ferraris, some guys jump on Oprah's couch. It just depends."