I've seen a couple of 'portalets' go over and it's a fairly gruesome spectacle, particularly if they land on the door, rendering immediate escape difficult and squidgy.
I'm surprised by talk of 'straining sessions', teeth-marks in the woodwork and associated paraphenalia to assist with the evacuation process.
My experience at Le Mans is usually contrary to all this huffing and puffing. Best described as leisurely cable-laying, when my constitution is sound (look after your Guinness and it looks after you) - and a night-time Shuttle launch, when the imbibement has loosened me up somewhat, the 'no pain, no strain, just sit (squat) there and drain' philosophy is the one to which I subscribe.
I'll leave it to Fax to tell the tale of the assault with fire-hose that he endured in the Houx bogs in 2000 - and Ricardo to describe how he retrieved his readers, having dropped them down the hell-hole, while 'sorting himself out'.
The very, very worst crappers are the ones behind the tribunes. The horrors of those places are indescribable - oh God and baby Jesus, it makes me shudder to contemplate.........