That's the diminutive form of "Buttinsky".
WTF is a bidon? Sorry, I’ve been around for quite a few decades and never heard of that.
A “bidon” is a Mafia boss that goes both ways.
A bidon is Russian for milk jug, apparently.
When I first heard it, it is what the Russians were calling Biden, to imply that he was an empty container that had to be filled with positions of the day.
It is being used as a pun to insult Biden. Strangely, I’m ok with the Russians insulting Biden.
Usually gas or water.
#9 WTF is a “bidon”? That’s Joe Biden’s “Delawarese” for his “bidet”.