His political career features a giant collection of gaffes though. Hera are a sample of them which the Guardian went on about in 2019, which demonstrates he can give the likes of Dubya a run for his money:
As the former vice-president enters a crowded 2020 field, will his well-documented past of confusing and embarrassing moments work against him?
www.theguardian.com
Includes the fact he abandoned a presidential bid in 1988 when caught plagiarising Neil Kinnock!
When he puts his foot in it these days, it can just be down to that, or a stronger version of it due to advancing age (eg he called the Ukrainians Iranians in his state of the union speech). But yes, we are also told that he has a famous temper and sometimes really likes to say what he is actually thinking rather than being diplomatic.