Gardening Rapper

Listen up, buttercup. This joke is all about a "pun", which is when words sound alike but mean totally different things. So, "grow" can mean to cultivate plants in a garden, but it also means to increase the size of something, like a fanbase. So the rapper becomes a gardener to "grow" his fanbase. I bet you didn't know rappers like to rhyme, and now this joke makes sense! Pat yourself on the back for me.