Probably comes from a childhood spenteating leftover chips from substandard chippies
(
boris the spider,
Sun 22 Nov 2009, 1:06,
archived)
That could also explain the ingrained smears of chipfat on her upper bill and forefeathersTHIS IS SCIENCE
(
Shlvng,
Sun 22 Nov 2009, 1:12,
archived)