Just found this website so forgive me if it's old news but this shit is hilarious, it's like The Onion for grappling. http://awkwardshaka.com/
Definitely run into this guy several times. http://awkwardshaka.com/2015/08/19/eastern-european-finds-himself-unable-to-take-it-down-a-gear/ The guy is always a Pole or Ukrainian, always super athletic, hates warm ups, and generally perplexed why everybody isn't going balls-out at every moment of sparring.
Yeah we've got plenty of those guys. They sometimes hurt themselves and then carry on rolling at the same rate "It OK....just slight muscle tear...we go yes?" and then hang onto a headlock for the full 5 minutes causing you neck pain for the next fortnight.
Saw this one when I got up today. Fucking hilarious...and true... http://awkwardshaka.com/2015/08/25/...-comfortable-with-his-terrible-stand-up-game/
That's funny. Trained in Prague once and that seems just about right. Great training, but everyone I met had the personality of this guy: