A : i really need to borrow your lecture notes because i’m so sick i can’t go to class..please can i borrow them for a while..?
B : no you can’t..if you need it go get it yourself..(and person B goes so mad thinking person A is so selfish for asking it from her/him and for not wanting to go to the lecture..)
if person A is able to go to the lecture, he/she wouldn’t be asking for a help from person B..and person A doesn’t expect person B to be that unreasonably mad..so person A is deeply saddened – for being sick, for not getting the help and he/she’s accused as selfish..