Are you sure it's an adult? Sometimes adults are wrongly marked in the teens section. On the V2 chart, UFOtchi and Propellortchi are listed as adults, in fact they are teens. I know, I've had them both! If you are sure...
to be sure, look at the games section. if it has memory and sprint, then its an adult. (and a glich...) if it does not have memory and sprint, then its a teen. h34r: h34r:
Another way to be sure is input this password (if it is v3) in the PASSWORD section:
32479
91490
This will earn you a CLONE ITEM (!!)
If you can use the clone item (it's in your items, labelled '!!') then you have a Mametchi- and a glitch. If you don't, then it's the Teenager, Yangu Mametchi.