To visually check da actual performance of a newly-designed aircraft to ensure dat it will indeed "get off da ground".
Another definition of da word "verifly" could also be what a chick does to see if a dude really has such a huge juicy schlong and/or giant balls as he claims he does --- i.e., undoing da zipper on his pants to visually and/or physically inspect said penis and testicles.
by QuacksO August 25, 2024