I am possibly the most impatient person in the world. It can be very ugly. Its not a good handicap when you are trying to parent. Did you ever notice how freakin' long it takes a kids to do or say anything and how they ask you stuff over and over and over...... Seriously, not a good gig for the impatient.
Also, when someone takes forever to do something that they want your help with...liiiiiike put a boat in the water at a yacht club. This is not good for an impatient person to take part in. Nope...not good at all.
Apparently loud, long suffering sighs are "stressful" for the slow one.