Despite a large amount of research focusing on bullying and exclusion in secondary schools, there is far less research focusing on cross-gender bullying and 'popular' students who experience bullying. This research provides an analysis of interactions between male and female students (aged 13-14) in a school in England. The data provides multiple examples, both in the form of observations and group interviews, of girls teasing, intimidating and bullying boys and other popular girls. The analysis also considers teachers' reactions to this behaviour, highlighting that it is often unnoticed. This paper raises this as an area for concern and suggests that future research should explore this further, both gaining more in-depth knowledge of female bullying and intimidation of boys and popular girls, and exploring ways of working with teachers and schools to support students.