L-Day
When you're an L person and you go fuck a friend on a Tuesday or Thursday in May.
"I went and fucked my friend on a Tuesday. That was L-Day.", Emma, after school
"I had to fuck my friend on a Thursday in May, and it was the worst.", Logan, 5th period
"My name starts with L, so I had to fuck my friend on a Tuesday. That was L-Day.", Taylor, DMing his friend