If you don't know the difference between a Mouse and a Louse then you ......
are doomed to say things like, <Sure, "shit happens." This short phrase means that no matter who you are, or how careful you have been, sometimes something hits you that ISN'T your own damn fault. This was one point of Robert Burns' "To a Mouse" (the other point is that only humans fear for their future.)
Robbie would have been interested, but I suggest you stay off the shit or some other giftee wuld see gee us all the power to see ya as we wish he wud gee ya the powr to see others.
FYI, a louse is small than a mouse, but much larger than a burrowing nematode.
Publius