Yabba-Dabba-Doo! Perfect for how babies also speak a similar language, this Twins Flintstones Pebbles and Bamm-Bamm on Board sticker is perfect if you got two little rascal boy and girl twins. It’s a must-have for those that are addicted to the Flintstone’s cartoon series and the characters involved. Share these fun Pebbles and Bamm-Bamm on Board twin stickers with your family and friends. Start your car and back it up (not with your feet) with Pebbles and Bam Bam in the Flintstone’s car, with this peel and stick sticker that will for sure to bring laughs and smiles.