South Harrison soup sucker

The act of a women sucking cum up off the floor as if she was drinking a fine bowl of soup, from the south Harrison region, then spitting back out the cum back out into her hand for which she stores it in her vagina for consumption at a later time

My girlfriend was sucking my cock and after I blew my nut she performed an old fashioned south Harrison soup sucker. I am slightly worried as to why she wants to keep my cum for later