The phrase "bully boys" refers to a group of people, usually young men or boys, who behave aggressively and intimidate others. They may pick on or bully individuals to assert their dominance. Full definition
These aren't even bully boy tactics that some clubs are given more tolerance to than ourselves, or the free kicks given and against which were wrong. (justarsenal.com)
Only 6.1 percent of bullied boys reported online incidents. (edutopia.org)
Otherwise it is too easy for a rival to gain an unfair advantage through bully boy tactics. (newlawjournal.co.uk)