I would play it as penalty.

Penalty, but this deck must have 50 points in it.

 

2S denies a good hand.  With 10+ HCP he would usually double, or I suppose 3S might be a forcing spade hand.

Well a good spade hand anyway, forcing is probably overstating the case

trying to figure out what your saying destiny,you totaly confused my small brain with your reply.

what part of "2S denies a good hand because with 10+ points he would double" is unclear?

 

Double says, "We are going to beat this contract."

The dbl is penalty but the auction is by no means unusual.  3rd seat has extreme spade length in a very weak distributional hand.   This is the type of dbl you often regret, when the opps take 8 or 9 tricks with their combined 14hcp.

From Cornelius Vanderbilt down, it's always meant "I bet you don't make 2S."

How about  1c - 1nt - x   is this penalty or negative?

 

Both auctions are penalty JoAnne.