Let's not forget that in the end, everyone is different and drugs affect different people in different ways.
I'm not too sure why, but when my mates and I go out popping, some pills hit me hard and they're just cruising, other times I'm just waiting for it and they're rocking off their guts. We always try be on the same level, ie. we drink the same amount of alcohol, take the same amount of drugs but in the end, we all react differently.
Now don't get me wrong, I'm no newbie (ok by my post count I am) I've been popping for about 9 years now, but to this day I've never peaked so hard than last year in November, had a whole 007 (apparently shit pill), I was literally floored for about 3 hours. And my mates... you guessed it, just cruising.
Dunno guys, might have something to do with your mood, what you've eaten??? your build (i'm pretty solid). Maybe some of the other blue lighters can shed some light on the sitch.
Cheers, and keep rockin'