http://www.smbc-comics.com/comic/discount-flight
To be precise, that's four dollars per cork.
[2017 10-28] A Spike in Cork Sales
Re: [2017 10-28] A Spike in Cork Sales
But by adding spikes, you decrease the pressure per spike, meaning it gets more comfortable.
Re: [2017 10-28] A Spike in Cork Sales
Putting corks on the spikes decreases the pressure even more. What's your point? I don't see anything about adding or taking away spikes.