The side fasteners on a babies diaper/pamper is used here as Emergency Flaps. If your emergency flaps are about to blow, have blown or are stretching thin, basically means all hells going to break loose for a freak out, meltdown, you name it. It's the last straw, you have lost control if they've blown. You still have sanity if they are still intact.
"Dude, if this lady doesn't drive faster than 2MPH my emergency flaps are going to give."
"My emergency flaps blew, I was so pissed I had to leave."
"My emergency flaps blew, I was so pissed I had to leave."
by Kgarontee September 3, 2014
by Jamiehol February 16, 2004