Some times I get bored in meetings.

Ballpoint Pen / Photoshop

Work has been busy.  Here are some drawings I mananged to snag while everyone else was paying attention.  Its good for me to remind myself that I need to keep working on life drawing.  As you all probably know a good cartoon comes from good life drawing skills.

The lady on the left kept looking at me.  
Its always awkward when your subject notices he/she is being studied.  I have a thee-strikes rule to combat this.  I keep drawing someone until I make eye contact with them three times. After that I stop.
Do you have a rule for life drawing in public?
Or are you one of those people that just unashamedly stares down the person?