You can find this symbol on japanese toys, below you
 read "Kuchi ni irenai" [lit."Do no put in the mouth"].
Too cool to not remake it on DPaint :)

Readme created with ARC 3.1 - Copyright (c)1996-98 by Jens Weyer.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  370    1062  34.8% -lh5- ae1b Jan  1  1996 bambino.iff
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file      370    1062  34.8%            Feb 15  1999