

WASHINGTON — There are plenty of supporters who sometimes wish Vice President Joe Biden would plug his mouth — but slobbering over the pacifier belonging to Mayor Michael Bloomberg’s grandkid isn’t what they had in mind.

Bloomberg attended an investiture ceremony at the British Embassy in DC on Wednesday, where he was formally made an Honorary Knight Commander of the Most Excellent Order of the British Empire.

With British Ambassador Sir Peter Westmacott presiding, it’s a good bet the affair was mostly well-mannered.

But Bloomberg’s daughter Georgina, who attended, posted a photo of Biden — a baby-kissing politician of the old school — holding her 15-month-old son, Jasper, with the tyke’s pacifier planted in the VP’s mouth.

“What’s a boy to do when the Vice President steals your pacifier?” Georgina Bloomberg wrote on Facebook.

The image drew comments on her Facebook page ranging from “OH JOE” to “gross …”

The event was closed to the press, so it’s not known whether Biden also put his foot in his mouth during the remarks.