CRF250R 

A very fast race motorcross bike made by Honda. very good low end power with nice top end as well. The bike is red in color with a black seat, liquid cooled engine, a foot of suspension (front and rear), and a 2 gallon gas tank. The bike pretty much wheelies on command and the engian tops out at 13,200 RPMs (2006 modle), the 2006 and 2007 modles also feature a dual exsaust sytem stock with the bike.

Dude i wnet dirt biking in my back yard on my CRF250R last night.
I placed first in my class yesterday on my CRF250R.

CRF250R by daget24 May 1, 2007

crf250l 

The bike that gets all the bitches! Only real men can rip this pony. Makes the ladies wet when you drive by.

Look at that crf250l! Oh my, i need to go change my panties now *girl

crf250l by crf250l March 18, 2015

Crf450r 

A 450cc 4 stroke dirtbike made by Honda. It is the most powerful motocross dirtbike produced by Honda with a stock speed of approximately 80mph. New they retail for over $8,000. Honda dirtbikes are superior to the competition. Driving one compares to driving a rocketship.

In a pro motocross race the best riders compete using a Crf450r leaving the other Yamahas, Kawasakis, and Suzukis in the dust.

Crf450r by MotoMike June 28, 2013

crf250

Either a Honda dirt bike - ridden by those that can't handle the power of a proper 450 !
or a forum pseudonym used by someone that can't spell, and resorts to name calling when it is pointed out !

The crf250 is a four stroke moto-cross bike made by Honda - commonly ridden in the 125 or MX2 class.

crf250 by Ross_M March 19, 2008