"3551 ganda dalaga" – "3551" could be a typo or a code. "Ganda" means beauty in Tagalog, and "dalaga" refers to a young girl or maiden. "Pinilahang kinantot ng barkada" – "pinilahang" might be a typo; could it be "pinilahan" meaning to be looked at or admired? "Kinantot" is a strong term; in Filipino, "kantutin" is vulgar for to have sex. "Ng barkada" means by the gang or group. So putting it together: "3551 beautiful maiden who was admired and had sex with her gang."