2. A bread invented by Hovis, made to taste like white bread, but have all the nutritional goodness of brown.
3. A Hermaphrodite.
" Yesterday we went to Tesco and bought some Hovis Best of Both for our fussy child. Today we found out our fussy child may be 'Best of Both' as well."
Someone who has done something stupid, annoying: generally shitty. The word tends to be used in a jokey sense, as it's hardly a word you can take seriously.
"Man you PLEBWRENCH."
"WHAT A PLEBRENCH."