Im with the inhaling thing,i have a friend that tried to swallow it(i dont know what she was thinking)and it just got her sick.So maybe truly there just not inhaling.Or I also have a friend that no matter how much she smokes she says "no,i dont feel it....lets do some more" which in the end hey thats great for me too,but i wish she could just relize shes stoned.So maybe its something like that,hope you get it figured out