list is too long but lets see...
1) when they refer to characters as uke/seme when the positions haven't even been confirmed yet, or worse, in shounen-ais that are sometimes even set in hs
2) similarly, according to some mc = uke & ml = seme even if the story is from the seme's pov
3) saw someone say they can't read things from the seme's pov... WE......
