A combination of "skinny" and "attitude"; the loud, boisterous, obnoxious arrogance often displayed by skinny "beautiful people" with low to no intelligence and/or small sexual attributes such as breasts or penises'. This is very common; many thin people often try to compensate for their insecurity with their mental and/or sexual triviality by loudly and cruelly berating "overweight" people.

When someone goes to the gym and spends 90% of the time on their phones scrolling through social media

A word fat kids use to describe people who bullied them at school.