David Arquette is showing off his guns while leaving a strenuous dance rehearsal for Dancing With The Stars. Looks like 7-year-old daughter Coco had fun with a marker by writing on dad's arm "I Love Mom And Dad." Adorbs!

Hard to believe Mr. Arquette turns the big 4-0 on Wednesday! We'll admit, Courteney Cox's ex is getting sexier with age.

Can't wait to see David's slick moves on the dance floor when Season 13 debuts on September 19. With sexy Kym Johnson as his professional partner, he can't go wrong.