Evan, what would you do if someone was bashing in the car pics section?

Example:

Member1: Here's my car, blah blah blah.

Member2: Your car is a piece of shit.

Member1: Oh yeah? Watch this.

Member1 finds member2's car in the car pics section: You car sucks, ricer.

Member2 is a known IA'er.

Member1 is a noob.

What would you do?