light of my life, fire of my loins 

To describe the love of your life, or even more than that. Your world would turn into complete darkness or turn upside down without her.

It is in the opening sentence of Lolita the novel by Vladmir Nabokov / Lolita the movie, in which the narrator was obsessed with his stepdaughter which he named Lolita.

It is adopted by Lana Del Rey as lyrics in her song "Off to the races".

She is the light of my life, fire of my loins, I'm dead when she leaves me.

light of my life, fire of my loins by JeanG December 14, 2012

frothing loins 

When a woman is in an optimal state of arousal.

Petunia has frothing loins for Melvin.

frothing loins by jrm402 September 10, 2010

gird your loins 

An old-fashioned expression, meaning to prepare oneself for action. Originated in the Bible.

Oh shit, the principal's coming! GIRD YOUR LOINS!

gird your loins by 1185lamont December 26, 2007

burning loins 

A nasty itch only solved by fucking someone silly.

....example is example, but in Holy Mother Russia, an example examples.... Oh...

"I'VE GOT BURNING LOINS AND THEY MUST BE CURED!"

burning loins by 5dots September 23, 2013

Yoghurt loins 

A ginger guy who is constantly ejaculating in his pants, due to lack of human contact.

Oh look! There's goes yoghurt loins.

Yoghurt loins by Kissing cousin April 12, 2011

Bloody Loins 

a name for animal meat that you eat
but only used to bother vegetarians who still have a pregnant conscience and are insecure about their choice to eat meat

also, it could be a british person talking about loins

Garry! these are the best bloody loins I've had all year!

Bloody Loins by Munk_Hughes March 13, 2011

Squid Loins 

A strange fellow named Kevin who eats meth for breakfast, and shits out cocaine rocks. They also have a weird obsession with the shittiest bush known to man.

"Man squid loins is back on that smack."

Squid Loins by Frenchtoastbagels January 21, 2020