This is a term used to describe
FACE TO BOOB ACTION.
I'm not too sure if people will need a description of that but just in case this means
SOMEONE PUTS THERE FACE IN YOUR BOOBS/CLEAVIGAL AREA
This can be annoying if trying to do other tasks such as driving and cooking, but not washing up.
Yesterday I was washing up and Tony did F2BA to me it did not inturupt me and my dish washing antics.
Yesterday Tony did F2BA to me and I was driving and we killed several wickets
and two peacocks.