1. When someone is giving pleasure to the greatest number of possible participants. This is usually four for men (a blowjob, two handjobs, and anal)and five for women (a blowjob, two handjobs, vaginal, and anal).
2. Feeling overwhelmed by the number of simultaneous sex partners.
1. Last night, George was the fulcrum in a full junction.
2. God, I am at full junction, I cannot have another penis in me for at least a week.