yeah on this one i would go with a txt file. maybe like

on *:TEXT:!yomama:#:{ .timeryomama 1 2 msg $chan Yo mama\'s $read(yomamam.txt) }
on *:load: {
  if (!$read(yomamam.txt)) {
    write yomamam.txt so clumsy she got tangled up in a cordless phone! 
    write yomamam.txt arms are so short, she has to tilt her head to scratch her ear!
    write yomamam.txt mouth so big, she speaks in surround sound! 
    write yomamam.txt teeth are so yellow she spits butter! 
    write yomamam.txt so skinny she turned sideways and disappeared! 
    write yomamam.txt so short she does backflips under the bed!
    write yomamam.txt so short you can see her feet on her drivers licence! 
    write yomamam.txt so poor she can\'t afford to pay attention!
    write yomamam.txt so bald that she took a shower and got brain-washed! 
    write yomamam.txt so greasy companies buy their Oil from her!
    write yomamam.txt so flat she\'s jealous of the wall!
    write yomamam.txt so poor she goes to Kentucky Fried Chicken to lick other people\'s fingers! 
    write yomamam.txt so poor she waves around a popsicle stick and calls it air conditioning! 
    write yomamam.txt so lazy she thinks a two-income family is where yo daddy has two jobs!
    write yomamam.txt so bald you can see whats on her mind!
    write yomamam.txt so fat she got to iron her pants on the driveway! 
    write yomamam.txt so fat when her beeper goes off, people think she is backing up! 
    write yomamam.txt so fat people jog around her for exercise! 
    write yomamam.txt so fat she went to the movies and sat next to everyone!
    write yomamam.txt so fat she has been declared a natural habitat for Condors! 
    write yomamam.txt so fat she was floating in the ocean and Spain claimed her for the new world! 
    write yomamam.txt so fat she lays on the beach and people run around yelling Free Willy! 
    write yomamam.txt so fat she goes to a restaurant, looks at the menu and says \"okay!\" 
  }
}