@ChazsBrilliantAttitude
Should one fill the MN Royal Bingo Card it is acceptable to call out “House” provided of course, one pronounces it “Hice”
Kicking myself for not thinking of that 
Luckily, I do have diamond encrusted bingo card marker (dibber? Dauber?) whiich makes a discreet little inky coronet over the appropriate square.
And it is by (non) royal appointment to me, I'll have you know!