Observation

On my way to work today I counted three drivers who decided to merge into the other lane, and chose not to use their turn signal until they were already halfway through the process.

I think the fact that you are straddling the lanes was enough to clue me in to your intentions.

Next time you may want to try and signal before you start to merge.  That way, we both don't die in a fiery wreck of glass and steel.

Just a suggestion.