Robby Box : Noun.
From the British series Big Deal.
Robby was a compulsive gambler so if a person is being a Robby Box or doing a Robby Box he or she are taking a huge gamble.
I'll have 2000 to win at 100/1/
Bloody hell ! Your a right old Robby Box!
I bet you 100 that they won't win.
' Who do you think you are! Robby Box!