When Stanley (Jim Carrey) wakes after his first night as "The Mask" he is late for work and he can't find his keys...as he is searching for them, he accidentally kicks the table, which was not in the script because when he kicks it, he says "ouch!!" which is instantly dubbed over by the words "i am so late."
Ok here is my buzz, about kicking the table not being in there, In all Carrey movies as any Carrey fan knows, he always put his "improvisations" in there. This is a Jim fav.