OK heres a mountain climber at bottom with a snake asking him to help get top of mountain because he cant get there ........but the guy says your a snake and can bite me injure me . snake replies oh no sir i promise i will not bite you

so he picks up snake puts in back sack n takes him up to top

puts snake down and SNAKE bites his ankle causing him severe pain

HE screams you said you woudnt bite me

Snake replies "YOU knew who i was when you picked me up"