The lowly and crawly old Slug,
Envies Snail with a fire and hearthrug,
Tho' it has no abode,
To take on the road,
It can slip through the slop and be smug.

DUMB AGUE - DUNNE
(I used a "real" dictionary, AH, random opening...)
(Limericks not my strong suit, but I do enjoy them.)