snake in the ground
Similar to a snake in the grass, a snake in the ground is a far snakier snake. They are much harder to spot than their grass-dwelling counterparts and will strike when you least expect it.
"Hey man, keep an eye on that tall grass, could be a snake hidin' there."
"Hell, I ain't worried about some boring grass snake. There could be a snake in the ground right under our goddamn feet!"
"Damn man, you know that Becky my girl's been hanging with?"
"Yeah, Becky, she that older lady right?"
"Shit, it turns out she done Mrs. Doubtfired my ass. Revealed herself to be a man and made off with my girl."
"What a real snake in the ground."
"Hell, I ain't worried about some boring grass snake. There could be a snake in the ground right under our goddamn feet!"
"Damn man, you know that Becky my girl's been hanging with?"
"Yeah, Becky, she that older lady right?"
"Shit, it turns out she done Mrs. Doubtfired my ass. Revealed herself to be a man and made off with my girl."
"What a real snake in the ground."