Over the years, we've seen some of the most jaw-dropping moments happen between famous stars, from devastating breakups to the craziest feuds. However, among the most memorable ones are those shocking celebrity kisses that none of us saw coming!

Some turned out to be adorable smooches between friends, while others legit turned into steamy make-out sessions (ahem… Meghan Trainor and Charlie Puth at the 2015 American Music Awards). But then there were those lip-locks that were incredibly awkward — like the one between Miley Cyrus and Katy Perry at the Bangerz tour concert in 2014.

"I just walked up to her to give her like a friendly girly kiss, you know, as girls do, and then she like tried to move her head and go deeper and I pulled away. God knows where that tongue has been," Katy said.

Now, we don't know about you guys, but if one of our favorite celebs planted a giant kiss on us out of nowhere and in front of thousands of people, we would legit freak out (like, can you blame us?). However, stars like Taylor Lautner and Drake actually managed to take it all in stride. Well… sort of.

Click through the gallery to see some of the most unexpected celeb kisses of all time!

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