be up the duff
be up the duff
slang To be pregnant. You two have only been married for a couple of months, I can't believe you're up the duff already!
See also: duff, up
Farlex Dictionary of Idioms.
- duff
- up the duff
- spout
- be up the spout
- be/go up the spout
- be up the pole
- be up the stick
- get off one's duff
- great with child
- duff up