on chat:
    if {1::%player%} is not set:
       set {1::%player%} to "true" 
    else:
       if {1::%player%} is "true":
          wait 1 tick
          set {1::%player%} to "false" 
       else:
          if {1::%player%} is "false":
             cancel event
             wait 3 seconds
             set {1::%player%} to "true"