How many Pushups could you do in a day?

Context, one of my friends is claiming that he can do 700 push-ups in one day. He told me the other day that he did 700 in one day, woke up the next morning and did another 400. I personally don’t believe him he’s about 5 foot 10 190 pounds and does not actively go to the gym. This statement came after seeing that me and my other friend have been heavily in the gym lately, and I personally believe it’s an attempt to one up me. What do you guys think? What is your own personal most amount of pushups in one day? And how many do you think you could do if you really put your mind to it.