This is the actual definition given to me by a Japanese girl who I met and took for coffee. She asked me "do you know what a yellow taxi is" and I played dumb and said "you mean one of those cabs in New York?"
Two hours later after she sucked my dick and swallowed, she told me because she had to get going because her boyfriend was waiting for her to get home from work(first time she mentioned him)!! I asked so what was that about being a yellow taxi, and she replied,
"I guess I am one"
This is a true story!!