A fork of Rural Dictionary
To let something slowly "cook" in your mind.
She let thoughts of him slowly simmer in her mind.
A flight simulator enthusiast, usually on a home computer.
A group of simmers met on Vatsim.
The act of holding in faecal matter beyond it's natural release point, to the point where it is bubbling to get out. At this point the dirty payload is then released onto the waiting stomach of a loved one in an act of tarmacking (see 'tarmacking')
Lee has had one simmering on his hob for a few hours now while Laura is waiting by the fire for a good tarmacking.
simmer down - in northen england meaning to 'calm down'
That girl looks like shes in a rage! 'simmer down' love!
When one defecates into a frying pan (or any other stove top accessory) and turns the stove on low overnight whilst the unsuspecting slumbering owners/residents are asleep unknowing of the demise of their kitchen. The smell lasts a few days depending on the duration of the "simmer"
Ryan decided that an "upper decker" was too juvenile, so he decided to pull a "slow simmer" to his good friend Dave.