Corrected entry: Mental (the "Gas Man") assumes Harry and Lloyd are rival criminals who have deduced his identity yet he willingly places himself in their vehicle and doesn't even make an attempt to disguise himself.
lionhead
2nd Apr 2023
Dumb and Dumber (1994)
Correction: At first they did think that, but once they saw the apartment and their ways (and their dog car) I think they soon realised these guys were not pros.
It wasn't until the diner scene - which takes place after he had been given a lift by Harry and Lloyd - that Mental realised they were just a pair of weirdos with nothing better to do.
That doesn't make sense. That would mean he still thought they knew who he was and were "pros" when he hitched a ride to "get to know them."
Correction: To add, earlier in the movie, when Harry and Lloyd hear a knock at the door, Harry looks through the peephole and Mental is facing away from the door, so Harry never actually saw his face.
Which is besides the point; that Mental had assumed they already knew who he was.