They attempt to fill the spaces sucking air with heaving pains,
But, zombies do not snore all night,
To get brains they just need to bite,
Of course they cannot bite each other because that's what zombie law ordains,
Now, most zombies have lots of human friends,
And, the zombie decides when that friendship ends,
The friendship ends mostly over lunch,
When the friend's skull gets a crunch,
Of course, once the friend's skull is crunched upon the friendship never mends.