This is that 30 Cows In A Field thing all over again, folks.
This video, which has been viewed on Facebook over 6.5 MILLION times since yesterday, sees a couple engage in a bit of good 'oul fashioned laughing-at-your-SO-whilst-recording-it-on-your-phone.
Simply put, the riddle - if you can even call it that - involves asking the person what 'Y-E-S' spells out and then asks them what 'E-Y-E-S' spells out.
Take a look by clicking on the image to start the video.
Also, is it reasonable to assume that this video was recorded quite possibly after a bit of... eh... well, they're in a bed and it looks like they're not wearing clothes. ANYWAYS.
They aren't the only ones who have been caught out, mind. A pretty burly dude from New Zealand was caught out and got very, VERY annoyed.
We get it. We totally get it, man.
Via Facebook