As I was locking up a few hours ago I noticed that my seat tube is bowed out about 1/8" towards the rear wheel and that there are two dents (one of each side) on the rear of the seat tube right below where it meets the TT. I can't see any cracked/chipped paint at the welds where it would be more likely to give under stress, nor any marks on the paint where a thief might have been prying on it. What the **** did I do? The frame still seems straight side to side. Steel frame.
How could I possibly damage that tube?