The cold couldn't keep protesters from giving Donald Trump a bit of show at the weekend.

Hundreds showed up in front of Trump Tower in Chicago on a brisk Sunday afternoon to bare their butts in protest of Trump's refusal to release his tax returns.

As part of a "Rumps Against Trump" mass mooning organized by a satirical news organization, about 300 aimed their asses at the president's Chicago building for about 10 seconds.

Plenty of signs, puppets and creatively decorated bottoms were documented during the mooning, officially dubbed, "Operation 'Kiss Our Asses, Release Your Taxes!'"

Here's a look at the event in all its glory.

#RumpsAgainstTrump A video posted by Derek Michael Lundgren (@mpx_and_friends) on Feb 12, 2017 at 2:21pm PST

A bare-bottomed Trump puppet arrives at the mass mooning. Image: Scott Olson/Getty Images

Organizers said in a Facebook message that because the turnout was so strong they might plan another silly protest event, but nothing official is currently in the works.