Colin Kaepernick & Brittany Renner Pregnancy HOAX, Fake 'Baby Daddy' Instagram Joke Goes Viral: Fitness Model's 'Complete Moron' Twitter Rant [PHOTOS]

Brittany Renner should be careful when posting silly "jokes" on social media, especially when they involve "hook-up" rumors with NFL badboy Colin Kaepernick...

Earlier this week, the aspiring fitness model shared this viral snapshot on Instagram:

bundleofbrittany: "Preggers by kaepernick7."

Renner quickly deleted the rather cryptic remark and replaced it with:

bundleofbrittany: "Perfection @kaepernick7."

Read more on the original story here.

It's obvious now that Renner didn't actually mean she was pregnant with Kaepernick's child. Perhaps she meant that the black-and-white image of the 49ers footballer was so "sexy," that she'd LIKE to potentially make babies with him. Still joking, of course...

But then things spiraled out-of-control, and fans started fueling rumors that Kaepernick was embroiled in some serious baby mama drama.

So Renner fought-back on Twitter:

@rennerbrittany: "Must be a slow news day... the media and their outrageous lies are absolutely pathetic SMH! Stop believing everything you read!!!"

@rennerbrittany: "If you believe everything you read on the internet you are a complete moron."

To make light of the situation, Renner re-tweeted on Thursday (Oct. 2):

@rennerbrittany: "'@BeigeBrotha116: @rennerbrittany I read that 2 + 2 = 5 online and it must be true lol.' - RIGHT! SMH!"

Hmm... maybe she's just looking for some cyber attention? Well, if so, it seems to be working...

The infamous gossip webloid MediaTakeOut.com initially broke the story, and it continues going viral online. Which means some fans were quickly inclined to look-up photos of the fit-and-toned Renner...

Definitely doesn't look preggo!

Also, Kaepernick shared this on Instagram:

kaepernick7: "We just goin call this my anthem now! Keep trying #IDontGetTired #WhoDoYouLove #Se7enPounds."