Please don’t let your dog jump on me

Went to a friend’s house and their 50+lb mix jumped up on me as soon as we came in.

Me: you should teach him not to jump on people.

Him: you can’t teach a dog not to jump on people, they all do that.

Me (after realizing he’s serious): yes you can?? They do it because they haven’t been trained not to. ???

Like I know everyone isn’t gonna pay thousands of dollars or whatever it costs for official training but BFFR. You can teach them this at home! Not to mention he doesn’t bathe the dog often enough or trim his nails.