I’m going to hang low at home today

The speaker was not feeling well and uttered this nice mixup.  It is a conflation of “hang out” (to engage in some some frivolous time wasting) and “lay low” (to be hidden or inconspicuous).  “Feeling low” (feeling ill or sad) is probably also in the mix, considering the context.   A big thanks to David Barnes for hearing this one and passing it on.