The "Cold Water" singer posted a pic to his Instagram story of a hotel worker pulling a funny face as Kendall walked past.
JB circled the goofy staffer's face and wrote 'mood'.
As in shading Kendall is his 'current mood'.
But unlike the rest of the internet who is currently dragging the model for her questionable choices of late, we're sure Justin was just having a laugh.
The pair have been in each others pockets since they entered the spotlight.
They're often spotted hitting the town together, jet setting to a sick one-on-one vacay, heck, Kendall even once admitted that she had a childhood crush on the Biebs.
So surely she didn't take too much offence to the post... we hope?