Denim Taco
When a girl where her tight jeans hiked so high you'd think they climbed Everest, and the fabric shows off the taco shell underneath.

Another name for camel toe, more specific to tight jeans.
"That girl needs some looser jeans, you can see her denim taco!"

"See that girl over there?"
"Yeah."
"I'm having denim tacos for dinner"