to live self-indulgently; luxuriate; revel: to wallow in luxury; to wallow in sentimentality. ...

What wallow means?

intransitive verb. 1 : to roll oneself about in a lazy, relaxed, or ungainly manner hogs wallowing in the mud. 2 : to billow forth : surge. 3 : to devote oneself entirely especially : to take unrestrained pleasure : delight.

What is a wallowing person?

intransitive verb. If you say that someone is wallowing in an unpleasant situation, you are criticizing them for being deliberately unhappy.