When one random persons says the following to a developer trying to make fun of his age:

Person: i had no idea you where the same age as me if you saying 20 years that you finished school. I always assumed you were much much older than me

Developer: what do you mean, im 36

Person: No you said 20 years, so you should be 38

Developer: i finished school at 16

Person: Oh..

Developer: *walks away