When you'rehaving sex on a bed and before you cum, you throw your partner off the bed and cum on them.
"I gave her the salty shipwreck"! "what?" Yea, we we're romping on the bed and I felt a heated gizz coming on. So I pulled out, threw her overboard off the bed, then spewed on her."
When you blindfold your partner before sex, and then tell them to open their mouth to get ready for a load, you put a salty treat in their mouth instead (chips, pretzels, etc.)
"I gave my girlfriend a pretty nice salty secret last night!"
"Yeah, what'd ya give her?"
"Salt and vinegar lays!"