Manspreading is, without a doubt, the bane of most commuters' lives.
But now, a heartbreaking video has revealed the real reason why men open their legs so wide when they're sat down.
No, it's not to air their nether regions. It's because of a tragic condition called 'Manspreaditis', where men genuinely walk like they've cacked their pants.
There's even a support group for those who suffer from the crippling illness.
Obviously we're joking and this video is in fact a parody, but it's absolutely hilarious and a must-watch.
Mark Malkoff, the comedian behind the video, has seriously outdone himself.