Good idea
You see,the joke quoted above might be exploited in many ways:
1-we can use this joke as an introduction to a theme about ********s,,accents,idiosyncrasy, probelms of ******** and communication for foreigners ...,etc.
2-to introduce homonyms
3-to introduce ways of asking and giving permission
it requires just a short pause and reflection to find even other better ways and means to take profit from jokes