This is the snippet for mirc.
When users slap u, u will auto slap back to users without type mssg.
Here the snippet:-

on *:ACTION:$($+(*,$me,*)):#:{
inc $iif(!%slapflood,-eu60) % $+ slapflood
if (%slapflood > 5) halt
describe $chan $replace($1-,$me,$nick)
}