1) Buying time
2) Fooling the other person into thinking you will do something when you actually have no intention to, and hoping they forget
3) Using it multiple times until the desired effect is achieved
"Sure. Just gimme like five minutes."
ex2) "It's your birthday today? Of course I know...hey I'll be over in about 5 minutes and we'll hang out." (unsuspected birthday gift card run to the supermarket, as if you actually remembered)
ex3) "Good morning honey, time to get up for work."
"MMMyeah...in Five minutes."
(One hour later)
"Hey it's been an hour--get up already!!"
"Alright, alright.....in five minutes."