This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
There’s even one for college/university students https://ii.library.jhu.edu/2015/09/04/what-to-do-when-your-students-arrive-late/ that says “Do not try to embarrass late students in front of the class. Statements such as “I see you’re late again,” or “Why are you late, Mr. Watson?” beg for a reply and can easily domino into greater classroom distractions. A better approach is simply to welcome the late student”
Care to cite a paper?
https://eric.ed.gov/?id=EJ204094
https://journals.sagepub.com/doi/10.1177/1053451211414186
There’s even one for college/university students https://ii.library.jhu.edu/2015/09/04/what-to-do-when-your-students-arrive-late/ that says “Do not try to embarrass late students in front of the class. Statements such as “I see you’re late again,” or “Why are you late, Mr. Watson?” beg for a reply and can easily domino into greater classroom distractions. A better approach is simply to welcome the late student”