Czech Airlines a good 20 years ago, nose gear just coming up, and the captain decided he'd try and rip the engines off the wings. One heavy bounce and people losing their minds slightly & the Captain cooly advised one of the over wing doors was showing as not locked just as they were about to take off so they decided to keep us on terra firma and have it looked at. As we were sat in an overwing we let him off although nowadays I think they'd chance the take off, stay low and return asap as we really were a hairs breadth from taking off.
New plane found as he'd dinked the original too much ( needed a hard landing check for the gear if I recall rightly) and onwards to FRA some hours later although we never did find out if it was our door that was scheduled to open itself at 10k feet.