Maybe something like this

alias kickperson {
inc %kickcounter
if ($istok(100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000),%kickcounter,32)) {
describe $chan kicks $1 (People / bots / things kicked: %kickcounter $+ )
msg $chan Congrats $1 $+ ! You are idiot number %kickcounter I\'ve kicked! 
}
}