if you record it as $ 2 - join when not recognized by the missing symbol is better to put

on me:*:JOIN:#: {
if ($nick == $me) {
if ($ chan isin% blacklist) {
msg # Sorry but this channel is blacklisted. Parting in 3 seconds....... []2(If you think this isnt right please join #staffchannel)
.timer 1 3 /part # Blacklisted channel
halt

}

}
}

^^