Man-to-man contact, especially, in a compromising but unintended way such as in an overcrowded shower room.
"At maximum capacity, the average prison shower has roughly six inches or less of clearance between naked dudes, so at some point, there will probably be mantact. When this happens, quickly assess the intent of the person next to you, and if the mantact was unintentional, both inmates should issue a “my bad” or similar as quickly as possible."
by Zejan November 13, 2009