ahh see i dont like bongs at the bst of times let alone one with no water lol, sounds to me like your talking about what is now in my area as a shottie bottle.

bottle big hole(rush hole) littler hole to just put the joint/bowl in smoker covers rush hole lights bowl/joint inhales to 'cream up' the bottle then removes fingers from rush hole to allow a 'rush' of air & cannabis smoke.