Sounds familiar to me.
I pulled up one day with a Harley on a trailer, not entirely unexpected. I had been talking about getting a bike for commuting (I was driving a diesel truck at the time), but she hardly ever pays attention to my musings...
I found an older Sportster for pretty cheap (paid cash for it) and loaded it up on my trailer.
I pulled up at the house and got out. I heard my daughter say through our front door, "Mom, Dad just pulled up with a motorcycle on a trailer" I heard the "WHAT????" shriek pretty easily... Yeah, as you can imagine it was kind of loud for a bit. She got over it somewhat. I still get harassed on occasion. I figured she would listen better the next time I talked about things. NOPE... I still surprise her with stuff from time to time. She just won't learn.

I learned a lesson years back from an old gun collector. Whatever you spend on yourself, if you give your wife half that much in cash you will be OK. Just don't tell here your giving her HALF what you spent...