ok so the joke is there but the execution not so much.
It felt like you were going to make a couple jokes there
(the graduate wedding scene joke, the priest is a bad guy joke, or maybe a far more appealing guy shows up and she chooses the fat dud idk)
When animating its best to put the most detail into what people should pay attention to for the joke. If the joke is in the title than reference the title. more than anything the best thing you can do is set expectations to defy (which was the joke you were going for) you expect them to marry eachother (expectation) they married food/ cosmetics (defy) the problem was there was no because or therefore
like imagine its the same set up right? but every once and a while it cuts to legs running (drawing attention) you put emphasis on the anyone objecting (which you kind of did but not for the joke but for an unrelated joke that took away from the main puchline) they say i do and kiss and then a hamburger is there too late drops to its knees and starts to cry
theyre getting married but someone wants to interupt (expectation) but its a hamburger (defy) it loves him (because) hes fat and crys because it was late.