Shawn Mendes and Camila Cabello have something to say to haters who say they kiss weird ... and they said it in this new video they posted to Instagram: "So, we, um, we saw, like, on Twitter and stuff, you guys saying stuff about the way we’re kissing and how it looks weird, like we kiss like fish," Shawn says.

Yeah, really hurt our feelings,” Cabello says to the camera. "We just wanna show you how we really kiss." The couple then go in for a super-sloppy makeout sesh until Camila throws back her head in laughter.

Celebs like Niall Horan and Charlie Puth commented - 10 crying/laughing emojis and "HAHAHAHAHAHAHAHAHAHHHAHAHAHAH," respectively.

What do you guys think of Shamila's post?! Try our Yappa app video commenting after the jump -- we want to SEE and HEAR what you have to say!