The day before, i had Hopslam, yesterday Green flash West Coast IPA and now i am having Hop Stoopid. I do not feel enough bitterness. In fact they seem to be drinking just normal. I can drink those all day without feeling anything. No burning sensation on tongue, not enough bitter aftertaste. What is wrong with me? Do i need to try higher IBU beers? I found Hoptimum, Ruination, Resin, SN Big Foot, some IPA from Sam Adams ( i guess Latitude 48 - very early in my beer exploration, do not clearly remember but it felt palate wrecking at that time) and Half Cycle from flat12 a local brewery to be adequately bitter.