Not sure if this post belongs here but im gonna throw it out here. alright so here's the skinny:

i've been riding fixed for a month now and have been skidding effortlessly. but when i tried skip stopping my cranks feel like they move from the reverse force of "stop." is that bad movement? i just want to know if i should be worried? i mean the bike is a month old but like i said the crank seem to have moved. so i just wanted to know if i should get it serviced or what? lemme know what ur thoughts are guys. thnx and really appreciated it!

wait....what?

I'm guessing he is talking about his cog slipping when he skids. You need to fix this, untightened cogs and lockrings are notorious for stripping hubs. Go to your LBS, have them tighten it, go mash hard up a hill, tighten some more. I'd suggest getting a chain whip and a lockring tool so you can deal with this on your own. Good luck!

oh thnx man. i didnt really know what wus going down but i'll have my lbs take a look. thnx. i really thought it was something with my crank cuz it felt like that was slipping. but ne ways thnx again.