Feline Fetish??

One of my kitties seems to have a distinct like for fishing my husband's socks out of his drawer. Actually his drawer or the laundry basket if the laundry hasn't been put away. Just socks. These are socks that have been matched and "balled" with a mate. Rocky will completely empty a drawer and spread them around the house. He takes themdown the stairs and leaves them at the bedroom door. He doesn't hide them, he seems to leave them right in the walkway, on purpose.

Anybody ever seen this?