Noun
Sex, usually used in times of crisis when a sibling or parent walks in on a sexual conversation. It can be used as a cover word or for recreational purposes.
Words also used in this sense are:
Ice cream - Oral Sex.
Cake - HJ and/or Fingering (Depending on 'flavor' of cake)
Brownie - Anal Sex.
When on the phone, 'cookies' is a way to ask the other person if there are any listeners. This indicates that something is about to be said that should be kept under wraps. Used on land line phones to normally avoid, parents, siblings, co-workers, etc.
Person 1: Man! You should've been there last night, I was......wait, cookies?
Person 2: *looks around, looks at phone* Nah, you're good
Person 1: So I was with this babe in Vegas right,.......