first impressions: our last?

so the other day i was troubled by the statement "first impressions last". this was not the first time that i have been troubled by these 3 small words, but i recently met someone, who did not give me a good impression, and i now fear that i may never give said person another chance to impress me. but should i agree with the statement that so troubles me?
first of all i decided to make a mental list of all of the first impressions i have ever had. had any of them changed? well, no. so this worried me. i am a fairly good judge of character and when i meet someone, i know fairly quickly whether i am going to like them or not. sometimes i later learn things about new friends that surprise me (like the first time i met cheese i would NEVER have discribed her as a shy person, as she kept saying "where's my tim badge?" to me. now i would say she is less outspoken than i first imagined. get her drunk tho...) but this too happens rarely.
so, does this mean that i am quick to judge and unwilling to reevaluate a new friend's character? no i dont think so, but i do think it means that your first impression will have a profound influence on me.
what about those people whom i have met whilst incredibly intoxicated so that i can not actually remember my first impression of them (and this has happened a few times)? well these people remain first impression-less. rather, my impression of them has been built up over a series of rendez-vous and with each encounter i have gotten to know them a little better. this situation makes me more comfortable. sure their first impression of me was as a sloppy, classless trashbag, but i am not bound to one impression from which i draw all subsequent oppinions about me.
solution: when meeting new people, first get as drunk as possible.