best of the bobbin
to watch her head bobbin up and down like that,she should be awarded the best of the bobbin on the nobbin
a girl who gives the best blow jobs,she the best of the bobbin when it comes to blowjobs
"to watch her head bobbin up and down like that,she should be awarded the best of the bobbin on the nobbin" What is the definition of "best of the bobbin"?