Bone·ah·coast·ah
Slang.

1. If used in the right context, it is another way of saying "Had sexual intercourse with."

2. It could also be used along similar lines to "Bollocksed it up."
1. "That's correct, my wife rode the bonercoaster last night."

2. "That project was a total fucking bonercoaster."
by A.R.G.U.S Mykal September 5, 2006
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When you see a really hot guy or girl, but then something very significant quickly changes your opinion But then another aspect picks up, just to be Disappointed again
So I was on the bus the other day, and tere was this super hot chick sitting across from me, but then she lifted her arms and damn her pits were hairier then mine. But she had no bra and a super loose singlet and it was not that bad. Until she kissed her girlfriend. Man that was a real bonercoaster
by L0RD 0M3GA February 22, 2015
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