Bug with !!! Using Mega 2560

a long time ago in a far off computer room
when operating systems were compiled from punch cards every night...

we had a strange bug then
only went wrong on the 17th of the month as I recall

turned out that the bit pattern of the digits as it went past looked like the pattern for some sort of reset

... just wondering

mebbe the clever (ha ha) boot loader is using !!! as a delimiter
I dunno ignore rambling