At RAF Linton in 1977, a "punchy" mate of mine was accused by his QFI of "dabbing" the brakes on hard towards the end of the takeoff roll in their JP3A. He said he certainly hadn't.
They completed the sortie but afterwards the QFI asked the groundcrew to check the tyres for flat spots.
The tyres were fine but the chief reported that half an inch of metal was ground off each main undercarriage bay door edge.
The gear had been retracted early over a bump, as the gear folded as advertised, the JP sank back on and dragged its u/c doors, which were still open.