Gender of connectors and fasteners

Electrical and mechanical connectors or fasteners often come in two male and female varieties that purposefully require both to connect properly.

Songs

I heard there was a secret cord
you plug it in and you meet the lord
but you don't really care for safety, do ya?
it goes like this: the black, the red
you touch 'em both and bam you're dead
the purple arc of power flowing through ya
hallelugjrghtqdhjtqeeyhvsniitdvbjjr

–EntertainmentTrick58, set to meter of Hallelujah (1984) by Leonard Cohen.

See also

• Wikipedia:Gender of connectors and fasteners