Sen. Elizabeth Warren is perhaps the most sought after endorsement for the Democratic presidential candidates.

And if you believe her tweet from Friday, Hillary Clinton might want to think of a plan B.

The next president can honor the simple notion that nobody is above the law, but it will happen only if voters demand it. — Elizabeth Warren (@SenWarren) January 29, 2016

Ouch. That seems like a direct shot at former Secretary of State Hillary Clinton.

Many social media users felt the same way.

This is too perfect. pic.twitter.com/E4wjRpBndy — Countermoonbat (@CounterMoonbat) January 29, 2016

@SenWarren when are you going to endorse Senator Sanders (: — Britton Durham (@bwdurham88) January 29, 2016

Some saw this as an indication that Warren could be contemplating getting into the race herself.

@CounterMoonbat @AsheSchow i could see Warren still getting the race,she could certainly wrap up the fake native-american vote — Sayford Ford (@SayfordFord) January 29, 2016

H/T: Twitchy.com