<human>: well heres the story, my brother found a $30 ( (gun pic in link) Spyder Sonix Pro i did go with him to pick it up since he found it on facebook. he picked it up about 6 days ago. well he did say something about it being a birthday gift to me(today is my birthday, 18 finally) well he gets home and fires it and says to me "i was buying this for your birthday, but i didn't know it'd be this good" and keeps it. he did just buy a Tippmann Alpha Black paintball gun sorta new off one of those facebook selling pages.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: brother buys paintbal gun for as a gift for me, then keeps it for finding out how nice it is. need revenge plan. his birthday is coming up in a few months.