Ouch! I just barely caught my left thumb with just the toe of the razor & this happened:
I ran it under some cold water for a few minutes, washed my hands with hot soapy water to keep it clean & from getting infected then I put a bandage on & wrapped it up with some electrical tape:
I didn't even feel it for the most part but it's more than shave ready for sure. So when you are dealing with straight razors, use extreme caution & pay attention or this will happen.