Someone who can't order a drink off the starbucks menu without having it modified. Reference to the character "Sally" in "When Harry met Sally" who could never order anything without having it modified.
"Mathilde is such a starbucks sally, it takes forever for her to order her drink" or "I can never go to starbucks for Mathilde because she is such a Sally, I'm afraid I'll mess up her order"
by sassygurrrrrrl September 30, 2013