You shouldn't lie. It's just a basic rule we're taught from childhood. Many of us don't listen to this advice, and we all tell a fib once in a while, even if it's minor.

Others lie to try and prove a point, and they'll do it all the time. Frankly, the rest of us are getting sick of it. It's not surprising that many will often lie on their social media accounts for either attention or just plain boredom, but there's a line that shouldn't be crossed. Thankfully, some people don't just sit back and let these people get away with lying.

If you're lucky, you find one soldier brave enough to prove just how much the original poster is lying with either facts or receipts. When these moments occur, they are captured in the in the act by some, and they can be both satisfying and hilarious.

Will the people behind the lies learn? Probably not, but it's pretty funny to watch them get proven wrong anyway. Here are 15 of our favorite examples.