and they talked a gibberish of their own , of donkey and nondonkey , system overhead and packet space , of drumming it and hotfooting , of a 181 ( which was good ) or flock ( which was bad ) or totally flocked ( really not good at all ) and plug-code and hog-code and jacquard ... and they liked kids , who reminded them of the ones they 'd left behind or would never have , and kids loved the towers .