It's hard to tell which candidate you are taking a dig at with this (I can probably guess). It really could be either one of them. They are both old men, and they both get angry when confronted by people who disagree with them. Does Trump nod off? He certainly isn't always focused. He frequently rambles and says incoherent things.
The insults that Trump supporters/conservatives/Republicans levy at Joe Biden, just serve to illustrate their own cognitive dissonance with who Trump is. What do you see when you look at Donald Trump? Is it a man 25 days shy of his 74th birthday, who is at least 40 lbs overweight, wears a spray-on tan, has a set of false teeth and a hair weave - which he dyes yellow (... and do you see a lot of blonde-haired men in their 70's by the way? Do most men that age even think it looks good to have blonde hair?) Do you see a secure, mature, level-headed, thoughtful, articulate and focused leader... or do you see Donald Trump?