Bus[s]ing—the word for transporting dishes from the table to the kitchen in a restaurant, or children from one school to another for the purposes of desegregation—can have either one S or two, according to various dictionaries. But the same word, when it means kissing, simply must have two to tango. There are ten instances of Bussiness* in OhioLINK (including two with the qualifier "sic"). Although this little girl looks too young to go into business for herself, a kissing booth may be in her future.
("She gets the penny, he gets the kiss" from Wikimedia Commons.)