I was attaching a front wheel to a BMX. Matt was behind me inflating a road tyre.
The horrible sound of rubber being stretched to exploding point by high pressure. BANG!!
Me: "F@#K!!", jumping up, ears ringing.
Matt: "I fink vat tyre's not seated properly."
(No shit, Sherlock!)
At least I think that's what he said... can still hear only 'eeeeeeeeeeeeeeeeeeeeeee'