The one-handed egg cracking skill, regardless of your martial technique, is one of the most important demonstrations of a subtle level of breakfast mastery. Not only is it essential for any short-order all night diner cook having to make endless inane smalltalk with late hour drunks and vagabonds, but for home use, especially in this era of the kitchen as the social center of gatherings, it can be the tiny piece of sentimental magic which either makes or breaks any morning-after engagement. The most obvious example is with a sexual partner whom may or may not have been entirely impressed with your erstwhile performance. The one-handed egg display indicates to the other person, "hey, at least they've got some talent because they managed to make my eggs a perfect 'over medium' while refusing to let go of my ass with their other hand... hmmm. There is some potential here."