'Harley Quinn' co-creator Justin Halpern claims this scene was nixed by DC, and the internet has thoughts – including 'Justice League' director Zack Snyder.
Everyone always brings up stuff like that but in the moment no one would care. Endorphins are pumping emotions are on fire and they already wanna fuck each other.
And presumably they've been fighting crime all night in those suits so they're likely quite sweaty and dirty. And it's Gotham dirt. Catwoman's going to wake up with a UTI.
Batman has a utility belt. Do you think he doesn't have something to freshen up his breath or wipe down his face after getting sprayed with all sorts of shit.