Just a thought... wouldn't this script be better if it were an text event trigger script.
Example:
;sex.joke stuff
on :Text:!sex.joke:#: {
set %sex.joke $rand(1,2)
if (%joke == 1) { msg $chan Things Not to Say During Sex #1. But everybody looks funny naked! }
if (%joke == 2) { msg $chan Things Not to Say During Sex #2. You woke me up for that? }
}
;Yo mama stuff
on :Text:!yo.mama:#: {
set %yo.mama $rand(1,2)
if (%yo.moma == 1) { msg $chan Yo mama's so big her belly button's got an echo. }
if (%yo.moma == 2) { msg $chan Yo mama's so big she cant wear an X jacket cause choppers keep landing on her back }
}
ect. till you have em all done. Of coarse the close bracket would be further down seeing how you made it long.
And by making breaks in the script with " ;Descriptions here " helps you to find the section in the script if you notice typos or something you can reword better and flows making it funnier.

and you dont have to add the / to msg in the lines. mIRC will automagicly do the message for the channel.
yes I know... automagicly isnt a word. lol

Just a thought though.