Yesterday Today

Used during that awkward timeframe where you've stayed awake past midnight, and thus the "today" in your head is technically yesterday

At 3am

Friend 1: Yesterday today was amazing

Friend 2: Please just say today, I know what you're talking about

Lemon Boy

Noun: One's inner voice of anxiety

Person A: Hey are you upset with me?
Person B: No. Why?
Person A: My lemon boy is just acting up