There is only one possible explanation for what you're about to see.
Uniforms Jaguars will wear next Thursday night vs Titans pic.twitter.com/wJESUEYHOZ— Mark Long (@APMarkLong) November 13, 2015
Someone affiliated with the Jaguars accidentally spilled diarrhea all over the team's uniforms, and they can't afford to order new ones so they're just going with it. You might be saying, "Wait, aren't these just part of the Color Rush jersey series the NFL is doing for Thursday night games?" If you're saying that, you're wrong. These are clearly part of some godforsaken accident that can never be undone. RIP to Jaguars jerseys of old that didn't look like diarrhea.
UPDATE: In person, they look like urine.