Here's what people say 21 celebrities were really like in high school

Ever wonder what celebrities were like when they were just normal, awkward teenagers? 

A recent Reddit thread asked members of the social network one question: "Redditors who went to high school with someone famous, who was it and what were they like before their fame?"

The thread was quickly flooded with hundreds of replies about stars in their pre-stardom days — and INSIDER picked out some of the most memorable.

Disclaimer: Since this is Reddit, INSIDER was unable to independently verify any of the claims made below, but they sure are fun to read. 

Blake Lively seemed "down to earth."

"[I] went to high school with Blake Lively," Redditor Seraphus wrote. "[I] had a few classes with her throughout 3 years [...] She was pretty cool. I always ended up seated next to her so it became kind of a running joke through the years. She seemed down to earth and not stuck up." 

Ariana Grande was reportedly very mean.

"[I] had a family friend who went to high school with Ariana Grande," wrote Redditor AshleyScared. "[She said Ariana] would always pick on kids she thought were inferior to her."

Redditor herdana had a similar tale: "[I] currently go to the same school Ariana Grande graduated from. I know a lot of people who were in classes with her, and my sister was in the grade above her. One of my friends said she was a real obnoxious b----, and apparently bullied some other kid on the bus."

Grande has previously said she was the one who was bullied in school: "I was in every group. I suppose I was a bit of a nerd, but I also had a group of friends, too. I knew what it was like to be popular, but I also knew what it was like to have my heart broken by bullies."

Ashton Kutcher was a "sweetheart."

According to one Redditor: "My cousins lived near Ashton Kutcher and went to school with him for a bit. He also worked at a restaurant with my aunt. They all say he was a super chill guy and a sweetheart. My aunt has run in to him a few times when he's been back home and he's always been really nice. So that's cool."