2 visit room mates
normally entails ringing the room mate first to see if they are in & what they are up to
walk the 3 doors down and annoy your friend, which then takes their concentration away from their assignment also
after discussing general crap you and your friend may decide to engage in another way of procrastinating eg. eating, driving, watching tv.
(this form of procrastination can lead to students AND their friends becoming lazy and possibly failing)