eine dicke Lippe riskieren #idiom (Podcast S01E15)

Today, we talk about the German idiom “eine dicke Lippe riskieren”. What does “eine dicke Lippe riskieren” mean?
to be brazen; literally: to risk a thick lipIdiomHyphenationeine di·cke Lip·pe ris·kie·ren
Meaning[1] colloquially: to be cheeky, insolent
Example[1] Walter once again risked a fat lip, the question is how long his fellow club mates will still tolerate this.
(Source: Wiktionary)
This is a funny phrase, I think. People say that someone risked a fat lip when he’s cheeky, when he is bold.