I dont know why, but i felt compelled to do this. !_! I'll try to update this whenever i have the time.
Here goes:
It was 4:11 and mike was speeding home from highschool. He was two miles away from his house, and he might not make the desiginated time. The clock ticked to 4:18, he was going to be late. Mike jumped out of his truck and jogged inside. He grabbed his untensils, ( bong, baggie, and lighter.) and took a puff. Shizam! There he was upon the magical mountain!
The errors are small, I'm just nit-picking but I'll point them out. Don't get mad!
First sentence needs a capital M for Mike. Second and fourth sentences there is no need for a comma before the 'and' because 'and' is a conjunction. There's no need for a full stop after 'lighter' because the words in brackets do not form a sentence, brackets are merely used to insert extra information into a sentence without having to over elaborate.