An EXTREMELY large collection of dicks, which when used in this context refers to a silo that is usually used to house corn meal, etc. This is substantially bigger than say a barrel of dicks or even a wheel barrow of dicks.
Woah that Benkid is a total fuck stick, kid can go suck on a silo of dicks!
Silo ShockSyndrome is a sudden, potentially fatal condition. It is caused by exposure a unit of content that has bled over from a political or subject matter silo that does not align with the silo one normally consumes.