alias 1337talk {
set %hackmsg $$?=\"What would you like to be translated into 1337 talk?\"
set %hackmsg $replace(%hackmsg,l,1,M,/\/\,H,|-|,a,4,e,3,the,+eh,s,z,S,Z,A,4,o,0,O,0,t,+,elite,1337,dude,d00d)
msg $active %hackmsg
}

menu * {
1337 Talk: 1337take
}
It needs to be \"1337talk\" not \"1337take\".