1970±, S. Clay Wilson, as quoted by Blair Haworth, “Meaning of Choad? (and a Peter Jackson question)” (1993 August 11), alt.tasteless, Usenet
Your choad veins are pulsing love songs

We all wank, sonny wiggles his willy, daddy plays with the meat in an orderly and rational way, and granddad's choad also delivers on a regular basis.

1985 February 28, Kevin Carosso, “VMS terminal I/O question”, fa-info.vax, Usenet via info-vax
If you aren't the type of system manager that likes to be nice to the choad that forgot to log out, then the program has it's [sic.] other uses

sebadoh blew sonic youth off the stage, you stupid choad

Stan: Oh man, I feel like a total choad.
Cartman: Aw, come on Stan. Maybe that's just because you look like a total choad.

One has to chuckle a bit at the sight of, in a single breath, getting borderline pedantic about the proper name for the region between anus and scrotum or vulva, and then using the term "thingy" ;)
Referrence materials on hand at the moment, in all their general glory, would seem to point to either term being acceptable in casual conversation....as well as bring to mind hurried, husky whispers of "Push my choad."

Massaging a circle around Dennis's back, Greg said, "Everybody has four potential e-zones -- his nips, his balls, his butthole, his choad."
"What's a choad?"
Greg's pressed between Dennis's legs, and Dennis gasped, "Oh yeah, there."

For the ladies, studies indicate that massaging the perineum with warm olive oil toward the end of the third trimester can reduce tearing and the need for an episiotomy. And yes, I'm referring to the pregnancy trimester, not the trimester where your proposal to major in "choad measuring" was declined by the biology department, the narrow-minded fools.

Choad

Meaning

Noun

Rhymes