The most common site of intussusception is ileocolic and colocolic, typically identified in the pediatric population. It is rare in adults, especially unusual in the left colon. When it does happen, it is usually secondary to a bowel lipoma, neoplasm, or a nodal mass which acts as a lead point facilitating intussusception. Patients tend to present with severe abdominal pain and frank obstruction with bilious vomiting. In this case, a clinical mass was felt in the left iliac fossa and per rectal examination was negative. This needs immediate referral to a physician for reduction to prevent bowel ischemia, followed by a sigmoidoscopy for histopathological correlation.