Britney Spears and her boyfriend, Jason Trawick, stopped at an ice cream truck by the beach in Long Island, NY, yesterday. The happy couple was joined by Britney's father, Jamie, as well as her two sons, Sean Preston and Jayden James, who ran in the sand in their swim trunks. Britney has a couple days off between her New York and New Jersey shows, which is just enough time for a quick getaway with her boys. Britney's Femme Fatale tour is a huge success, and she recently added a number of South American dates that extend her travels through November. The crowd in New York got a special treat on Tuesday night when Britney pulled Jason on stage for a lap dance during her performance of "Lace and Leather." Meanwhile, her single "I Wanna Go" broke into the Billboard top 10 this week, which is her third top 10 hit off of her Femme Fatale album.