The effect of when a person with a vagina is wearing tight enough lower body clothing (especially with exercise shorts/pants and leggings) that it slips into their genitals, or onto/past the "lips" of the female genitalia. This causes their genitals to be more easy to see, as it completely outlines it.
*At the gym*
"Hey, do you see that girlover there? I think those pants are giving her camel-toe. Should I tell her?"
When a girl wears skin tight pants and her pussy lips buldge through the fabric also creates a reason for guys to stare.
Chad : Wow did you see Kiersten she is sportin a Camel Toe today makes my dick hard just thinkin about it!
Craig : You know it kinda reminds me of a butterfly pork chop boy id sure like to tenderize it!
Kiersten : Are you guy's staring at my crotch?
Chad : No we just want to stick our dicks in it!
Kiersten: Nice!
When a woman's clothing clings so tightly to her crotch that a viewer can make out the cleft between the labia, she is showing camel toe. So named for the similarity to the actual toe of a camel.
Sometimes applied to viewability of a man's cock through his clothes, but this is awkward.
Camel toes are most often caused by tight restrictive clothing ie: spandex, lycra, ect...
When jacked up to the breast area it causes the "camel toe" effect, also known as the moose knuckle.