04:57

For some, Warren’s refusal to shake hands with Sanders has delivered the most compelling moment of the night.

It’s now one of the biggest topics of conversation around the debate happening online, with many calling on experts to decode the exchange:

Kevin Robillard (@Robillard) TWITTER BODY LANGUAGE EXPERTS ACTIVATE

Eli Valley (@elivalley) A million lip readers about to gather round this clip pic.twitter.com/8lZITmR9cn

Addy Baird (@addysbaird) HELL yeah baby body language Twitter is BACK

And already the jokes have started to roll in:

The Gravel Institute (@GravelInstitute) A lip-reading of what they said to each other after the debate:



WARREN: "Hey Bernie, how are you? Sorry, I have a cold, don't shake my hand."



BERNIE: "Doin' great, Liz. Hope the kids are good!"



WARREN: "They are. I like your suit! You chose it well."



BERNIE: "Thanks, Liz."

Roko's Brocialist (@bombsfall) Well time to go pick up my order of 6000 "Sanders Warren Best Friends 2020" tshirts from the UPS shipping dock, can't wait to sell out of these tomorrow! Haven't been watching tv

molly (@isteintraum) Marriage Story (2019) pic.twitter.com/TmjDiBNPVP