Awwwww! Howard does that with Jim's shorts (Jim is his favorite Hooman). Even though he's got a cushy cat bed and my furry bed comforter, he pefers to sleep on the shorts whenever he can. Howard also likes my jacket. Luna, however, prefers hoodie sweatshirts.

It's just Boo's way of being close to you when you're not around. Just another one of the really cute things cats do