Write a simple alias that sets a variable containing the number of times that alias has been used...

Code:
alias _kick {
  ;this will check whether the counter has started or not
  if (%kcount == $null) { set %kcount 1 }
  ;if the counter has started, this will increase the count
  else { inc %kcount }
  ;this will perform the kick adding the count to the end
  kick $1- - This was kick number %kcount
}

Usage: /_kick <#channel> <NickName> [reason]