Well, your follow code is kind of messed up so I will give you a little tutorial with it. =)

Lets make the follow verb

mob //mobile object
var/following = 0 // a new mob variable called following, we will need this to stop folling later
verb/Follow(mob/M in view(4)) // you can use this verb on a mob from 4 tiles away
switch(alert(M,"Do you want [src] to follow you?","Follow","Yes","No")) // asks M if you want him to let you follow him/her
if("No")
src << "[M] doesnt want you to follow him/her"
return // if no, it stops the verb
src.following = 1 // then because it was stopped, you dont need the if("Yes") now the variable "following" is true
while(src.following) // while your following variable is 1 or TRUE
step_towards(src,M) // step towards the person youw ant to follow
sleep(2) // this refreshes every 2/10 seconds
verb/StopFollowing() // a new verb named stopfollowing
src.following = 0 // your following goes to 0 and the while(src.following) loop stops
src << "You stop following a person." // tells you

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When you say any word constantly, it will sound like a chimpanzee talking gibberish

~~Dragon Lord~~