It turns out the culprit was most likely a canker. The really scary thing is that the only difference between a canker and cancer is a hard K! I can't help but wonder... what if that hard K had been a soft C?? Thank goodness we will never know.
After a thorough search on Google and going through a mental list of potential diseases, these are the diagnosi (diagnoseses?) that Calder potentially could have received:
HIV (After reviewing the causes of HIV, I basically ruled this out early on.)
A mucus on the tongue. (Last night I actually thoroughly cleaned and disinfected the boy's toothbrush drawer because I worried that it's disgusting nature might have caused a mucus growth on his tongue. I also threw away his toothbrush.)
A mouth blister.
Fortunately, this case is closed. Thank you everyone for your two cents. I wonder what the next strange illness the boys will come up with?
The boys just left for St. George with Grandma and Grandpa. For the first time since Lincoln was born, I am alone in my house for an extended period of time. I am supposed to go running 18 miles tonight. With my knee still acting up and the hot weather, I will be lucky to get to 10. I am a little concerned as no one will be home to call the police if I pass out along the way. Maybe I should tell the neighbor that if I am not back by 10:30 to call the police? I will log on and post how far I go when I get back.