The act of eating brown gravy off of your sexual partner. Typically from his/her genetelia.
Particulary common during the holiday season, when gravy is most readily available.
Akin to the "open faced turkey sandwich", which is when you consume brown gravy from his/her anus.
"Your mother prefers that gravy is luke warm before I have my hot turkey sandwich."
This can be a very funny inside joke at the Thanksgiving dinner table.