Yee-haw, DB!! A fantastic first entry for this one ;-)

Here's your S.B.L.O.B. for:

Instead of a gown, he wore a vest with a tin star,
On his side was a holster that he put his stethoscope in,
My concern was aroused when I looked behind his bandana,
& Saw that brown gooey liquid dribbling off of his chin.

Way to go! -- Áine