What did I just do? Fluid shot out of my handlebar when pushing my caliper in
The LBS said I pushed out a valve or plug - They said on some MB systems there is a 1-way valve that will deal with this in case there is too much pressure but the system I have lacks it. It was a simple fix, they pulled the plug, cleaned it, bled the line and replace the plug/valve. - They charged $40 (in a super expensive area)