There are physical limitations to how far the seat will go back, but this person tries to recline at least fifty times so that it’s in your lap. They recline the seat as soon as they get in the plane. The flight attendant will tell them to bring it back to its full upright position, but as soon as they are out of sight it’s back to recline time.
If they don’t recline immediately when they arrive they wait until you get out your laptop so that it shoves the screen into your abdomen. They may also decide to recline when you have a beverage so that it spills into your crotch.
Once the plane begins to descend to your destination the flight person will tell them to become upright once again. Once they are out of sight, they will recline and relax all the way until the rubber hits the runway.