I got detention 1 time [Grammar school, 7th grade] for handing in a report that just said "~~~~~~~~~~~~~~~~~~~~~~~~" for 3 pages.. (hey I was tired and it was 6am) teacher said "Is this some kinda joke?" (and lord I was mad that she even made us do it to begin with...) .. and I said "erm..... is that a trick question?".. and everyone was like *gasp*.. I was like *rolls eyes*.. she goes "Detention!" I was like -,-..
2nd time [Highschool 9 or 10th grade] (the last time I got detention).. was for being late.. which I found profoundly stupid, because I was outside of my homeroom door about to get my attendance called.