Heffelump originates from the word 'elefant' crossed with heffer (fat person) This word can be used 2 describe somebody with large butt/nose/ears, or is just incredibly ugly
God, that gemma is one enormous heffelump
Euw! Why the hell did u just snog that ugly heffelump!
A strange and extremely rare group of cow/hippos that used 2 hang around with a girl that looked like she was on acid.
Or a dipsy/forgetful person
Woah ull never guess what i just saw? A flying moomin!
Claire ur such a bloody moomin!