"porking-out"

But now, in place of this gross slang term, courtesy of Oxford University Press' 'Wonderful Word of the Week' column, one can say, preferably in a frenchified tone, 'bouffage'.

bouffage [boo-fah-zhe]
"a filling meal. From an Old French word glossed in the OED with a quote from Cotgrave as 'any meat that (eaten greedily) fills the mouth, and makes the cheeks to swell; cheeke-puffing meat.' "

http://blog.oup.com/2008/02/reading_the_oed_an_interview_with_ammon_shea/