Nickname for "Tonbridge" boys school in Kent, known such for its trustworthiness of switching aside homosexuals (or BUMMERS). Boys may have ridiculous bodily hormones for their sexual disappointment. Tend to be happy with their Rugby accomplishments but it is about all these are generally good for. nickname for tonbridge. a boys' school in kent. understood in the region for producing either homosexuals, or ridiculously horny right young men.