Comment by cassianoleal

:D TIL where "hot dog" comes from! Thanks! :D

I don't think your examples apply though. The dog example is just dog meaning sausage, sometimes with a temperature quality added (or ignored), but always a sausage with no other connotations.

The pepper one, maybe a little, though according to Etymonline [0] pep is short for pepper, so it's all the same really.

[0] https://www.etymonline.com/word/pep