Translation of malcriado

I ran across the bridge to reach the other terminal and asked at the check in counter which connecting flights were still available. I wanted to avoid having to drive into the city at any cost.
This messaging systems is very weird, especially if you are older than 30 or 40... I do not understand how it works, but it works... once we put a message out, over 2000 people see it within 1 day per page per message.
The course was a bit tough because the teacher always gave lots of homework. We were upset about his behaviour. He was very arrogant towards all the students. It was simply no fun to study there.