Lipstick on the teeth is always pretty mortifying.
*update for 2009 - my latest moritfying moment doesn't involve makeup, but does involve airbrush tanning. why be pale when you can look dirty & poor? none of the fixes i read about on the web worked, short of something with bleach in it, and stark white spots against my SAVAGE "bronze" (orange) skin isn't much better than looking like i've been playing in the georgia clay all day. this experience was no different than my first with sunless tanner...an hour with coppertone in 1990, almost twenty freakin' years ago (holy damn!). i looked like i had been staining furniture.
I have thin color-damaged hair. Control Paste is light enough so that it doesn't weigh down my hair or make it look greasy, yet it somehow makes it perfectly smooth and piecey. Also, that rhymes.