A male yoga fanatic.
Sven is quite a yoguy. He practices yoga 7 days a week.
Young white guys from the suburbs need to sound cool and tbus cannot address each other with "Hi Tom" or something semsible like that. Those with reeeaaly thin vocabularies have recently been gravitating to 'YO' for 'hi' and 'GUY' for whatever the addressee's real is. The natural contraction has become 'yoguy'
YOGUY check my new rims they're deck!