「吸屁股」是什么意思？

玩守望先锋 overwatch中几位女性角色的模型特别性感, 所以大家也把这个游戏叫屁股先锋, 用"吸"是因为这个游戏非常好玩, 容易上瘾.

ENPlaying Overwatch. The models of several female characters in Overwatch are particularly sexy, so everyone also calls this game 'Butt Pioneer'. The word 'suck' is used because this game is very fun and easy to get addicted to.