Joe Biden's not known for having the greatest mental capacity, but now he's casting doubts about whether he even has the energy to stay awake for the rest of his campaign.

During a town hall segment he hosted earlier this week, Biden had Hilary Clinton on to talk about why she's endorsing him for President. At one point, Biden let his head droop down and he appeared to have fallen asleep.

He seemed to wake up after a few seconds, but it was long enough for people to decide he had officially dozed off.

This wouldn't be the first time Biden's fallen asleep on TV, and as Donald Trump continues trying to brand him with the nickname Sleepy Joe, people's suspicions will probably go unchecked.

We all know politics can be boring, so if you're gonna compete, it's probably not a bad idea to keep a Monster at your side. Or at least come prepared with a back-up plan so you don't get caught drooling in front of everyone.