senseitive:

do u ever zone out but ur aware that ur zoned out but ur too lazy to zone back in

or you zone out (like on the bus) and then realize that your unseeing line of sight is on someone’s junk or butt (probably they weren’t standing there when you started staring in that direction) – so you try to make it very obvious that you were lost in thought and visibly shake yourself out of your reverie, just in case someone has seen you staring