Whether chitlins, haggis or puck,
Entrails on a plate simply suck;
You’ve got reason to gripe,
If you can’t stomach tripe,
‘Cause the stuff is just offal as fuck.
Tripe refers to the edible offal — that is, entrails and organs, such as stomach, liver, heart, kidneys, lungs, heart and spleen — of butchered animals. One’s culture dictates whether it’s a delicacy or utterly disgusting shit. The joke here regards the wordplay between awful and offal.