The Finatticz performing their hit single "Don't drop that thun thun thun" live Friday June 29th, 2012. Pre- sale tickets are available. The Function Friday nights inside Mexicali Bar and Grill located 1690 Spruce St. Riverside CA 92507. Offering weekly events, parties, concerts and social mixers from 9pm to 2am The Function is one of the hottest networks for mingling, dancing, and partying in the Inland Empire. Featuring live performances from the artist you love The Function is the IE'S premier nightlife destination for Friday night fun and entertainment. Events are 21 plus.