Ole Gunnar Solskjaer's men trailed 4-0 at the break, before Mohamed Salah grabbed his hat-trick only minutes into the second half.
Liverpool started the game on the front foot and stormed into a 2-0 lead inside the first 14 minutes of play.
Naby Keita opened the scoring for Liverpool before Diogo Jota doubled the Reds' lead, 15 minutes before Salah added goals number three and four before the interval.
Liverpool then started the second half as they ended the first with attacking intent and poise as Salah netted his side's fifth of the game.
Villa fans, who saw their side win at Old Trafford last month in what was their last win in the Premier League, commented on United's performance on social media.
One Villan said: “It could be worse. We could be Man United."
Another added: “Being an AVFC fan hasn't been great the last few weeks...so I've started watching MUFC games to cheer myself up.
A third said: “This is why Villa fans sometimes need to give your heads a wobble when talking about bad results and sacking managers. 0-4 at home with that team. Now that’s a bad result."
One more said: “Man Utd making Villa look good."
Another said: "Watching United makes me feel so much better about being a Villa fan."
Source : https://www.msn.com/en-gb/sports/football/aston-villa-fans-pile-in-on-man-utd-misery-as-liverpool-run-riot/ar-AAPTK1P375