Haha, selling cars can always be an awesome/crazy experience! Yours sounded like a mix between the two; mine on the other hand, was 100% crazy. My friend and I got a call on his civic that was in the paper; no less then ten minutes the guy rolls up on his bicycle to my apartment. We go on a test drive just around the block with him (nothing out of the ordinary.... yet!) He pops the hood, takes the dipstick out, and then takes a lick of the oil and tastes it for a bit, then spits it out. Must've been good stuff because, he takes another lick of it and says "perfect, i'll take it!" His bike is still outside my apartment, i'm dreading his return.