if ($1 == !yomomma) {
var %y $rand(1,8)
if (%y== 1) msg $chan Yo momma so fat she got a pocket sized microwave.
if (%y== 2) msg $chan Yo momma so fat she got a remote control Refridgerator.
if (%y== 3) msg $chan Yo momma so ugly she cant turn a vibrator on.
if (%y== 4) msg $chan Yo momma so fat u need a gps to find her butt crack.
if (%y== 5) msg $chan Yo momma so cool she whare her wig to the side.
if (%y== 6) msg $chan Yo momma so fat she got marrride in a atempt to get cake.
if (%y== 7) msg $chan Yo momma so fat her shadow waighs 42 pounds.
if (%y== 8) msg $chan Yo momma so fat her weelchair got a recliner.
}
This is how i would do the Yo momma jokes Because, the way you had it spoiled the suprise.