If you're nnot used to dddrinking coffee, and when you ddo it's decafff, then I would suggest yyyou nnot drink ttttwo of those bbig ccoffee-house ccups full of rrregular. Ifff you do, it's llliable to makke you ooooovercaf....overcaffffinnna....ovvercaffinnn...shshit....jittery.