A camping trip where only gay or curious straight men go camping without sleeping bags for the purpose of sleeping inside of each other.
In order to mancamp properly you must only sleep inside of another man. No sleeping bags allowed, only penal/rectal heat and friction can be used for heating purposes. A Hot Carl or Golden Shower can only be used in life and death situations for heating.
When the 19 year old whores asked if they could go camping with Brian, he replied, "Sorry girls, we are going MANCAMPING. The only ass I want to sleep in is MAN-ASS!! We will snuggle up all night and sleep inside of each other!"