Tallulah is obsessed with licking her paws. It's partly an allergy thing, partly obsessive/compulsive behavior.
She knows she isn't supposed to lick her paws. Mom tells her to stop licking when she catches her. So she knows better.
So what does the little sneak do?
Lick lick lick.
See, I've got a bully stick in between my paws. That's what I'm licking. Honest.
Well, since my paws are right there, a little lick can't hurt.
Well, I'm already licking my paws, might as well keep going.
Downstairs, she makes sure to turn her back to mom so she can't see the paw licking.
Who says pugs aren't smart?