However, you could play with the individual words:
* Basement: You could use a homonym for "basement" like "base meant" (though that doesn't make much sense in the context).
* Salesperson: You could use "sales person" (two words) or "sales-person" (hyphenated). This is a bit of a stretch though, as it's not a true homonym.
A more fun approach:
You could create a humorous phrase that plays on the sounds of "basement salesperson":
* "Base meant salesperson" - This suggests that the salesperson's job is to convince people that the basement is meaningful.
* "Basement sales-person" - This highlights the awkwardness of the phrase by emphasizing the hyphen.
Ultimately, there isn't a perfect homonym pair for "basement salesperson," but you can use wordplay and humor to create similar-sounding phrases.