Unlike throwing a hotdog down a hallway which means u banged a really loose chick, "Like Trying to Drive A Mack Truck Down a Hallway" means that u had penetration problems or she was just really tight
For example my cousin was unable to bang his girlfriend because she was to tite so that situation would be described as Like Trying to Drive A Mack Truck Down a Hallway
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.