When having sex costs you too much money . emotion or risk(venereal desease.they are married or if the person is you’re interested in lives far away for example).
Anyone could tell by the purse she carried that she was too sexpensive!
An object that may have had an original purpose (usually electronic devices) or a concept model of something else, but in any case unable to serve its intended purpose except as a display item or a paperweight
Since many of these paperweights, especially those of the old electronics category, required a larger investment at its initial purchase, these paperweights become expensive, hence, the "expensive paperweight"
I found an old ipod in my uncle's basement, but it doesn't even work anymore so now it's just an expensive paperweight!
Is that a BlackBerry?
It WAS a BlackBerry, now it's just an expensive paperweight!
Whoa is that seriously a holographic infrared keyboard?
Nope, this is just the concept model for a holographic infrared keyboard that got rejected during the pitch... So now it's just an expensive paperweight!