Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: i wear contact lenses in only one eye, since it's my lazy eye. when i don't have my contact in, my vision is still fairly good, it is sharp and clear because of my good eye, however i lack the depth perception that having 2 good eyes gives me. 

because of my one good eye, it isn't immediately obvious whether or not i have a contact in; to check i have to shut my good eye and see if i can still see. 

wednesday morning, i was sitting in the front row in my discrete mathematics class. its a small class, and this semester is my professor's first semester teaching.

i realized i might have forgotten to put in a contact, and i slowly blinked my left eye to see whether i could still see anything. it was kind of blurry, but strangely not as blurry as it should be with no lens in, so i didn't know whether i was just tired and bleary eyed. i winked again, and then once more, my vision coming into better focus.

i caught my professor giving me a weird look after that, and at the time i thought "oops, got to stop doing that, i probably look weird sitting in class with one eye shut." sleepy and groggy as i was, i didn't realize it looked like i had been winking. 

on friday, i went to his office hours, and he kept giving me these weird kind of uncomfortable looks as i was asking questions about some of the topics from the week's homework. i was confused.

i only just remembered the "blinking" incident, and i think i know why...

TIFU by trying to figure out whether I had a contact lens in, and accidentally winking at my professor.