"shut up" "screw you" "
eat shit" "stupid" "jackass" "idiot" "moron" The phrase is used or can be used in lieu of
a bad word or insult. The phrase can also be used in situations where you don't want to directly insult someone but want to express a feeling of annoyance or
discontent..
Your sister asks to borrow your sweater. You know she will never return it. You simply respond with the phrase "
go buy it." meaning hell no!
Someone comes up to you and tells you that you did a poor
parking job...you can simply reply with the phrase "go buy it." Meaning
F-off or F-You.
A co-worker is telling everyone in the office how he/she received the best overall evaluation score. You are annoyed at their tone of voice or insinuation that you aren’t as good. You can simply say "go buy it."