We've all fallen asleep on the train, right? Luckily, the worst thing to happen to us was missing our stop. This homeless man wasn't so fortunate; he was woken up by a rat running onto his face.

In the brief clip, everyone's favorite disease-ridden vermin darts around the carriage, introducing himself to the world, before picking on one man in particular to snuggle up to.

Dammit, it's just not fair: You're trying to catch 40 winks, and instead you catch a rat to the face. Probably some contagious disease, too.

Check out the video below for proof of the fleabag acting as everyone's least favorite alarm clock .