uncle knobhead
that 1 distant uncle who you only see at big family gatherings who nobody particularly likes and who proceeds to annoy everyone.
"oh jesus here comes uncle knobhead, let's ignore him"
Uncle Knobhead
Somebody who if it wasn't for social media would be completely ignored. Thrives in the company of other Uncle Knobheads. Nobody else is impressed.
I'll just have a look at social media to see what people are thinking about the latest from the Middle East. Oh fuck, the Uncle Knobheads are there already.