The message sounded like maybe a 4 or 5 year old child - possibly a boy - saying something about playing with trucks. And said "Haha mother trucker, mother trucker!" And then the voice dropped really low to sound like a grown man and said "Can I come over and play?" And about a second later it hung up. When I tried to call it back, the operator said the call couldn't be completed and gave no reason why, such as: This is a long distance number, call couldn't be completed as dialed, or this number is not assigned.