/alias figlet /exec - -o echo $0-| figlet -w 60 | awk -F% 'function randint(n){return int(33+n * rand())} {printf("x03%s%sn",randint(12),$1)}'

Combining the joys of shell scripting, figlet, irssi colour escape codes and two different kind of escape sequences, you can achieve the following...

Awe Inspiring Figletification

Eternally useful, is it not?

Run the above code in irssi, then /figlet !