直肠子

直肠子:

Literally means:

straight guts; straightforward person

Actually means:

It figuratively means a straightforward person. Often used to refer to a person who is accustomed to a straightforward way of speech or behavior instead of a roundabout way.

比喻性子很直。常指一个人说话做事习惯于直来直去，不会拐弯或绕圈子。