Got milk but can't stomach it?

Sounds like my Food Science & Technology 10 class' textbook all over again. I must have the caucasian gene somewhere inside my cells then, cause I seem to be able to handle an extremely high amount of milk per day(which I greatly thank God for; genetics only accounts for so much of your build; if you don't intake the proper nutrients, you only produce of shell of what you could be); only once in my lifetime have i managed to reach that limit, and it was not from a milk-drinking contest either. it was when i ONLY wanted to drink milk one day, and then it hit me(i'll spare you the details unless you want me to go all out, heh heh)

basically, our body only produces the substance needed to digest milk during our childhood, then gradually slows down production of it as we age. without those substances, you get the runs. however, if you keep ingesting diary foods, your body will think it still nees to produce the substance. and that is why i am not lactose intolerant for quite a large degree; i'm not ENTIRELY lactose tolerant, but my tolerance is pretty high; i could go for maybe 6 or even 7 tall cups a day if i wanted, if i spaced them out and drank them like the 8 cups a day for water we all need.