don't throw stones in glass houses

Don't criticize others for faults that the you also have (since such criticism will likely be returned). You keep claiming that I dodged taxes, yet it's public knowledge that you still owe the IRS for years of tax delinquency. Don't throw stones in glass houses, Senator. A: "She just spends her time complaining about other people. It's so shallow and annoying!" B: "Now, now—don't throw stones in glass houses." Whoa, don't throw stones in glass houses there, buddy! You're being awfully critical of my taste in women for someone whose last girlfriend was really rude to everyone!