I'm hearing your missing line as below. The other question mark I hear as you did ... even though the line doesn't make any sense.

Eat no meat,
Eat no meat,
Eat no meat at all.

Tofu treat and bulgur wheat,
Heed the vegan call.
Between your lips no meat should pass
Any meal or snack
Cholesterol and fat your mass
And have a heart attack

No fast food joints we'll e'er enjoy
Barbecue no more
Serve legumes, grains, and beans of soy;
Or we'll boycott your store

Eat no meat,
Eat no meat,
Eat no meat at all.
Tofu treat and bulgur wheat,
Heed the Vegan call, ooooh...

[spoken by a bass]
Ask not for whom the dinner bell tolls.
It tolls for thee.

I notice that the vegan narrator admits that they "enjoy" fast food and barbecue. There's a reason for this: humans are omnivores. We are designed to eat SOME meat. (Not as much as Americans do, but SOME.) This can be seen by the fact that we have canine teeth, which only appear on meat eaters.

I'm not saying that vegans are wrong in their diet. Instead, I'm saying that those vegans who insist that humans are not designed to eat meat are mistaken.

BB,
NightWing