It's rude to expect people to always give you rides.
Xavier is in a foreign country without a car and needs to make a long trip.
Xavier wants to hitchhike to his destination.
Xavier starts walking and sticks his thumb out as people pass by.
Xavier stands by the side of the road and attempts to jump into the first pick-up truck he sees.
A driver sees Xavier making efforts to walk and takes pity on him, giving him a ride.
The driver gets scared, thinking that Xavier is a robber, and pulls a gun on him.