The wind-chill factor that one calculates at night as they ride the trolley down to the BART station in San Francisco. People who usually do this are brave for enduring such temperatures and like to place their cold fingers on your neck.
(On the Trolley)
E: Hey, do you want to sit down.

R: No it's ok, I'll just stand.

E: Okay, while you're out there can you calculate the Trolley Wind Chill Factor for me??

R: (stink eye)
by candycrazee October 15, 2011
Get the Trolley Wind Chill Factor mug.
How many browser-tabs you've opened after researching something on the web.
Weather for tomorrow: Tab Factor = 1
Closest bakery opened on a holiday: Tab Factor = 3
Trying to decide which iPad cover to buy on Amazon: Tab Factor = 17
by brezelben February 22, 2015
Get the Tab Factor mug.