Bed Warmer Edit Meaning

1.

To prepare the bed for your girlfriend or spouse by trapping an enormous gas attack or fart under the covers just as she pull back the sheets to get into the bed. Like a Dutch Oven except it is a surprise attack.

Jim let go a huge gas barrage, under the covers, and tucked in the sheets to prepare a bed warmer for his woman.

Or,

As she pulled back the sheets and was overcome by the stench, she knew her Husband had prepared a bed warmer.

See dutch oven, fart, poot, stench

2.

Term originating at Renaissance Faires used to describe a one-night-stand type relationship.

Did you see that girl with Aron? I bet she's gonna be his bed warmer tonight...