(nsfw-ish) There are uses of emoji related to phonetics. E.g.:

Sometimes people will simply use the corn emoji in place of the word 'porn', too.

https://www.capitalfm.com/internet/corn-meaning-porn-explain...

Similarly rooster emoji (cock) and cat emoji (pussy) have language dependent double meanings.

https://www.threads.net/@authorjennplummer/post/C6pKkIlSPUM