LOL I know what you mean, I haven't even told my wife of my recent purchase of the 2 CHT 18.2 subs. She thinks the stereo is out of control as it is with the "stop light speakers" being my JTR Triple 12LF's. The fact that these subs show up on a pallet is just the icing on the cake.
I thought just having two delivered will be easier to justify, seeing 4 of those boxes on a pallet would have been a hard sell.
This isn't new for me, I've bought cars, jet skis and boats and not told her till after the deal was done. She's a good sport and would have "approved" anyway.