One time a mosquito bit me riiiiiiiiiiiiiight underneath a hangnail on my finger. Urrgh i couldnt reach it, so I bit my nail until i could reach it enough to scratch it.

Once a mosquito bit me on the arm and i scratched it so much weird CLEAR gunk(it looked like pure water)was gushing(well not really gushing, but alot of it was coming out)out of it. I swear it knew it couldn't be pus.