Democratic presidential candidate Joe Biden gave his 19-year-old granddaughter a kiss on the lips during a campaign rally in Iowa on Sunday, prompting some grossed-out responses on social media.

The former vice president entered the event at Clarke University in Dubuque holding the hand of Finnegan Biden, the daughter of his son Hunter.

“I would like to introduce you to my granddaughter Finnegan Biden. The reason I asked Finnegan — grandfathers are always allowed to embarrass their granddaughters — that goes along with the territory,” said Biden, 77, his hand over her shoulder. “Her other grandma graduated from Clarke College in the mid-’60s and talks about it all the time.”

He then described the difference between daughters and granddaughters to the crowd as he walked around the stage before circling back to Finnegan.

“But granddaughters not only love their grandpops but they like them. And that’s the great thing. Thank you, baby,” he said before giving her a quick peck on the lips.

She later joined her grandfather as he waded into the crowd, where he greeted supporters with hugs and posed for selfies.

“Nobody” posting on Twitter linked to a photo of the smooch and noted: “This is Biden with his granddaughter. I can’t unsee it so now you have to.”

Diante Johnson, president of the Black Conservative Federation, said: “No man should EVER kiss his granddaughter like such … This is a weird family. Who’s running this man’s campaign??”

But Beth Bourdon had a different take.

“i would like a man to kiss me the way joe biden kisses his granddaughter,” she wrote online.

Biden has been criticized for his handsy behavior with young women before. Weeks before he launched his campaign last spring, seven women came forward to say his behavior made them feel uncomfortable.

They spoke out after Lucy Flores, a former Nevada legislator, accused Biden of holding her shoulders and smelling her hair during a political event in 2014.

Following those accusations, Biden pledged to “be more mindful” of women’s personal space.

“Social norms have begun to change, they’ve shifted and the boundaries of protecting personal space have been reset,” Biden said in a video last April. “I get it.

“I hear what they’re saying, I understand it and I’ll be much more mindful.”

The Biden campaign did not immediately respond to requests for comment.