duff(redirected from duffs)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.
Related to duffs: Duffs device
up the duff
Pregnant. Primarily heard in UK, Ireland. You two have only been married for a couple of months, I can't believe you're up the duff already! I was pretty wild during my university years, which is how I found myself up the duff at 22.
be up the duff(British & Australian informal)
to be pregnant Oh, don't tell me Kylie's up the duff again!
n. the buttocks. Don’t you get tired of sitting around on your duff?