In the present study, physical self-schema referred to the perceived body image youths have over their physical appearance. Using a two-item online questionnaire, the study analyzed the effect of physical self-schema acceptance on perceived severity of online aggressiveness in cyberbullying. Five hundred and seven students from Belgium, Spain, Romania, and Turkey participated in the survey. The results suggest that when mapping effects of physical self-schema acceptance on perceived negative effect of online aggressiveness, the curvilinear interaction model (2%) is more robust than the linear interaction model (0.8%), when both models are statistically significant.