Levi Johnston knocks up another young Alaska gal

Levi Johnston's sperm have come home to roost -- again. The 21-year-old stud has up and got another babe pregnant out of wedlock, TMZ is reporting. She's Sunny Oglesby, a 20-year-old teacher from you know where - Wasilla, Alaska. The couple has been dating for just over a year, and she's said to be fewer than three months along in her pregnancy, sources tell TMZ. This means little Tripp Palin, the child he had with his ex-fiance Bristol Palin, could have a half-brother or sister on the way. (Or both!) No response yet from Bristol, who in her 2011 memoir wrote that bad boy Levi cheated on her constantly.