crash, crass

Crash or crash means to come into contact violently or destructively --
You're driving too fast; you'll crash into the wall!
Don't crash into the mailbox on your way out.

Crash or crash also means a collision, a violent or destructive  meeting --
The police were already at the crash site.
He swerved just in time to avoid a crash.

Crash or crash also means to show up at a party or event uninvited --
Should we crash the party? We know some of the kids.

Crass or crass means crude, unrefined, or insensitive --
He thinks any mention of money is crass.
She can't resist making some crass remark about what the other women are wearing.

Now that you know that, you can say --
"We thought it was crass, but he just had to hear every detail of the crash."