"Where exactly is that in relation to plumb loco?"

"Run like hell for the hills, we're trapped on an ambulance that's gone plumb loco"?

Chow, that boy has gone plumb loco, because only a crazy man would try that space station thing he is working on!

Had me thinkin' I was goin' plumb loco for a while!"

"Brand my comet cookies, I must be goin' plumb loco!"

Even under these stressful circum-stances, that was plumb loco, Wild Bill.

Things have gone plumb loco lately.

Hell, I'd of figgered enybody tol' me to save my brass had to be plumb loco, too.

"Have you gone plumb loco?"

When they say, 'You think up the most interesting ideas,' it means 'You are plumb loco, woman!'

Why, a fella can go plumb loco."

Admittedly he wasn't called Johnny Loco without a reason, but he had not yet gone plumb loco.

"Lopez was plumb loco!

"These pesky flyin' buzzsaws are drivin' me plumb loco, let alone all them jungle noises out there!"

"The critter's plumb loco!"

Plumb loco, he headed southwest, windin' up in Palo Pinto County, Texas, in the fall of 18 and 65.

After learning this, Peggy's attempt to, in her words, "'motivate' him, business term, with a little 'praise', my term, he goes plumb loco, Spanish term."

Even Chow Winkler, the expedition's genial Texan cook, says, "Brand my thermopile, if the young inventor ain't plumb loco!"

"With the repetation thet Bully, pardon me, thet Cullen hed aforetimes, en' the word thet's going on about him these last months whin his pappy rid him-I figger I'd hev to be plumb loco t' stay hereabouts, wearing the shape thet I do now."