fuel coming out of filler tube whentaking turns

[xman]

I just filled up and when I left the gas station making a left turn onto the road I got the smell as if someone dumped a can of gas inside the burb
then I made a right turn into my neighborhood and when I got home I had
big wet spot where fuel came out of the gas cap. This has never happened before and with the cost of fuel now I just dont want it pouring out on the street as I am making turns and just wondering if something might be wrong with the vent tube, all the vent tubes under the burb look fine

Sorry if this is long winded just trying to figure it out
Any input would be great to help resolve this issue

Thanks
Dave