老着脸皮

老着脸皮

Literally means:

skin on old face

Actually means:

shamelessly; unabashedly

脸皮 metaphorically means one's sense of shame and embarrassment.

The whole phrase means doing something despite losing one's face or embarrassment. Derogatory.

脸皮，指羞耻的难为情的心理。

老着脸皮，指不顾丢面子或不顾羞耻。具有贬义色彩。