You ate a POUND of corned beef 3hrs into a century!?!? Oh man!
Actually, I'm just impressed you finished at all. I would have called 911 about 30 minutes later
Oh, and I don't think that was a bonk at all... it was probably more along the lines of:
A) struggling with digestion because you're riding a century and eating a meal for two
B) ate too much and your body is using too much energey to try and break down A POUND OF MEAT
C) your body saying "WTF DUDE?!"