When you relate some thing to the purity of gold.

When game developers run out of ideas for skins

A term used to describe when a piece of software (or music) is completed and written to a master disk (such as a CD-R or a DVD-R) ready to be shipped off for manufacturing. This term is believed to have originated due to the fact that the master CD-R disks used are sometimes a gold colour, and may actually contain 24 karat gold within the reflective layer of the disk. This includes the now discontinued but famous line of Kodak CD-R Gold Ultima media.

Gold = Au

a metal that has a melting point of 1337 kelvin

laughing out loud but in a mild sense.

a giggle

giggled out loud.

A last name posessed by a large number of jews.