Retired UFC heavyweight Shane Carwin, 38, recently responded to some fan queries on Twitter about what the sport looks like from the outside.

George Thoupi ‏@GeorgeUFCFan33
Hey Shane, If Brock Lesnar was in the UFC and you could fight him again, would you? And what would you change in your gameplan?

Shane Carwin ‏@ShaneCarwin
Dream come true! I knock him down and say get up bitch and knock him down again...and again...and again. @GeorgeUFCFan33

Stephan Khan ‏@FlexMastaSteph
how's retirement big man?

Shane Carwin ‏@ShaneCarwin
I'm itching to fight, can't stand it