i think i have a happy sandwich dance. it's not every time and my definition of sandwich is fairly broad, but it's not uncommon for me to hold my sandwich and do a happy dance in my chair while i am eating it. it is entirely subconscious.
11/1/09 amendment: i think i may have been mistaken in my initial assessments. i now believe that i have a happy food dance, which is not limited to, but commonly accompanied by, sandwiches. i am still investigating these claims and will update with any further developments as they are uncovered.