Is bad old man an idiom?

Internet buzzword: Bad old man is very bad.

This stem comes from a funny video about Tik Tok. When a little brother of the American group who delivered takeout claimed to be eight years old, he met a fortune teller and said that he would get ahead at the age of 24 and have no worries about food and clothing every day.

As a result, he finally said, I believe you, a ghost and a bad old man. That's fucking accurate. "I don't know thought he was calling names! In fact, this sentence means teasing, not really swearing.

Extension: no, original meaning: ancient refers to the wine that has not been soaked with me. Later refers to wine dregs.

1, dregs left by brewing: wine. ~ dregs (also refers to worthless things) ~ eggs. ~ bran wife (refers to a wife who shares weal and woe when she is poor).

2, rot, rot: ~ rot. ~ rotten.

3. Bad: Things are done. ~ cake.

4, practice, damage: ~. ~ practice ("practice" reads softly).