Image Source: WENN

Does the family that make out together stay together? Some of these super close celebrity family members certainly seem to think so.

Image Source: WENN

Kylie and Kendall Jenner

Would you ever suck on your sister’s tongue? Because apparently Kylie thought that was cute.

Image Source: WENN

Angelina Jolie and James Haven

Remember when this brother and sister made everyone uncomfortable after they passionately kissed each other at the 2000 Academy Awards?

Image Source: WENN

Khloe and Rob Kardashian

These two flirt and joke about having sex together a lot. Please tell us you have never joked about sexting your brother.

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Alicia Silverstone and Bear Blu Jarecki

When Alicia Silverstone “baby birded” her son – a.k.a., chewed up food and then spit it into his mouth – and posted the video, almost everyone in the world agreed that she was doing the absolute most.

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Woody Allen and Soon-Yi Previn

Marrying your step-daughter is so far beyond the line, being “too close” doesn’t seem to cover it.

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Brooke and Hulk Hogan

What’s creepy about rubbing suntan lotion on your daughter’s behind or tweeting a photo of her legs in a short ensemble? Nothing according to these two.

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Justin and Jeremy Bieber

Not only did Jeremy Bieber tweet “@justinbieber what do you feed that thing. #proud daddy” after his son’s penis was caught all out and about by the paps, Justin co-signed his dad’s comment by calling it “such a dad thing to say.”

Image Source: OWN

Lindsay and Dina Lohan

Is it that weird for a mom to get dressed up and party all night with her daughter? A little. Especially strange, and a bad idea, if the daughter in question has had a history of drug problems.

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Steven and Liv Tyler

This father-daughter duo kiss a lot. But it’s the way they kiss that leaves the paparazzi a little creeped out sometimes.

Source: WENN

Kim and Kourtney Kardashian

We’re not done with the Kardashians just yet. Remember that time Kim took a swig of Kourtney’s breast milk?

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Donald and Ivanka Trump

Donald Trump thinks his daughter Ivanka is so attractive that he wasn’t afraid to tell Rolling Stone that he’d totally be into her “If I weren’t happily married and, ya know, her father…”

Gross.