The best place to find great commentary about Twitter news is … Twitter. Duh. And people had lots of hilarious things to tweet about news today that Twitter’s chief executive, Dick Costolo, is stepping down.

Some people talked about Dick C — err, @dickc — while others chimed in about Twitter cofounder Jack Dorsey, or @jack, who is coming in as interim chief executive while the company searches for a replacement.

Here are a few of our favorite tweets.