I’m sorry but I don’t know the meaning of the symbolism here – can you help?
Update – 31 January 2014
I hate to use the now clichéd exclamation ‘Doh!’ ….. but …. DOH!
By putting your left index finger into the left corner of your mouth and your right index finger into the right corner of your mouth, pulling back on both and baring your teeth – and perhaps sticking your tongue out a little, I think you will get some idea what happening here! I can imagine two cheeky friends putting their tongues out at the passers by and a third bursting through between them with this distorted grimace – what rude chaps! 😉