Then it hit me!!!!
the most innocent and fool proof plan ever devised!
Step 1: Gather the Supplies
what you will need
a pen (preferably one that is similar to this)
a pair of pliers
Step 2: Dissassemble the Pen
Step 3: Close the Ink Tube
this is the step that makes this work.
how it works:
the end of the tube is used to bring in air. and if an airtight seal is created then the ink will stop flowing after a certain amount of ink has left the pen, after that the pen will stop writing which creates the opportune moment to ask to borrow a pen.
Step 4: Reassemble: and Strategize
when you are in class ( or other situation) and your pen stops writing simply turn around and ask to borrow the pen.
then at the end of class return the pen (here is your chance to converse) then say "thank you for letting me borrow your pen"
"want me to buy you lunch?" or some other comment that otherwise would require another way to ask such a question.
i realize that this might not work because some people are stingy with their pens :p but to me it seems like a good plan.
let me know how it goes if you decide to give it a shot. :)