It doesn't happen very often but occasionally I'm caught off guard and amused by my own thoughts.  Example; Yesterday I had to drive up to my folks place to pick up some appliances and I'm caught behind two cars in both lanes driving very slowly.  I can't get around them so it's a choice between being stuck behind a slow moving coupe in the left lane (fast lane, ha!) and an equally slow moving land barge cadillac driven by a blue haired couple in the right lane.  In the left I pull over into the right lane and think to myself "If I'm going to be stuck driving slow I'm at least going to be stuck behind old people",  realized what I thought and had a good chuckle.
    Eh, I guess you had to be there.
