the glare that guys/girls get when looking at some nice person for the first time, that usually stops you from looking at them for longer than 1-2 seconds. usually takes repeated interaction with the person to get used to the glare, allowing you to be more comfortable around them
guy: yo dude did u see that nice hunny in our science class?
other guy: yeah but only for a second. Have to get used to her hotness glare before talking to her properly.