Talk about a sentence with a low probability of ever being uttered in the entire history of the universe! 
It had just eaten at Denny’s and was obviously starting to blow chunks.
Assuming you mean in this commercial, cigarettes, or, more likely to my thinking (but probably not Denny’s,) joints.
Joe
Well, you can’t lay all the blame on Denny’s, at least some of the fault is with the alcohol one consumes before arrival. 
And what a creative ad agency! “How do we convey that we know a lot of people show up drunk at our stores late at night, and that is OK with us, but not incur the wrath of the MADD types?”
“I’ve got it, Manny! We will use wacky characters! They won’t be drunks, they will be acting stupid because they are fanciful creatures, like a unicorn or a leprechaun!”
/half Irish poster slinks away for another beer and pretends he is a T-Rex…
Not french fries? And you don’t have to make an assumption, unless there are a whole series of Denny’s commercials with unicorns showing up after a night of clubbing…