Just in case you didn't notice, but two bikes are now in your possession, one red, and one silver and red.  I have reason to believe that these do not belong to you.  You did not purchase them, they were not given as gifts, nor were they sold to you or exchanged for anything.  Therefore I believe that you STOLE THEM. 

In case you are unfamiliar with the crime in which you have committed the following definition may help you to understand:

The word comes from the noun STEAL meaning:

To take (the property of another or others) without permission or right, esp. secretly or by force:

In your case I believe that you performed the verb meaning:

To commit or practice theft.

So, you see, you have committed a crime and should be punished for your actions.  Unfortunately I do not know who you are, but I do believe punishment will come your way sooner or later.  Perhaps not in the judicial way such as "a good talking to from the boys in blue", fines, arrests, or jail, but rather in a more karma type way.  Perhaps someone may come by and steal those wheels from you just as you had to us, or some unfortunate type accident that commonly occurs while riding a bike.  By the way, road rash takes a while to heal, especially when the gravel and rocks start to fester and spew puss from your wounds. 

I am also very disappointed in the fact that your parent(s) did not teach you any morals in life such as taking what isn't yours is wrong.  I truly hope that your children don't become such a disappointment to the community as you have, perhaps if they do it just may be karma.