Rudy Giuliani (Getty Images/Roy Rochlin)

If former Vice President Joe Biden is making so many mental mistakes today, imagine what he’s going to be like three years from now if he’s elected president, President Donald Trump’s personal lawyer Rudy Giuliani warned Saturday.

“The man has something wrong with him, and it’s serious,” Giuliani said in an appearance of Fox News Channel’s “Watter’s World” program, cautioning that Americans shouldn’t risk electing a president with cognitive problems:

“I think that Bernie was so frightening they picked the man that is showing obvious signs of dementia - which is astounding because, if you consider that what he’s displaying gets worse, what’s he going to be like three years from now?”

“If he doesn’t know what state he’s in, and can’t figure out who his wife is, and if he thinks 150 million people, which is half the population, roughly, of America got killed, then, what’s he going to be like two years from now when that illness gets worse?” “We’re dealing with who’s going to be the president of the United States, and we shouldn’t pussyfoot around with it. The man has something wrong with him, and it’s serious.”

Last week, Biden appeared to mistake his wife for his sister when he introduced them during a speech, and also forgot who he was speaking to on-air during an interview.