那些混蛋居然在会议上公开嘲笑我的方案。

Those ___motherfuckers openly mocked my proposal during the meeting.

嘿混蛋们，我们今天去哪儿混？

Hey ___motherfuckers, where are we hanging out today?

这道数学题真是个巨大的挑战，我完全解不出来。

This math problem is a real ___challenge—I can't solve it at all.