I don't think they had self checkouts at my library 8u
I always went with my mom anyways.
Oi, she got pissed one time.
We were standing in line with our books and my dad was with us.
We were just chatting because it was a long wait.
My dad noticed an elevator and asked the lady at the desk where it went because the library was only one floor.
The lady got an attitude and said "Sir, can you please get in line!"
My mom got irritated by that so she walked up to the lady, said "He's with us!" then slammed the books down and stormed out.
I remember the lady's face looking shocked.