Immunity to ecstasy?

[Crazy_Mexican]

Just the other day, SWIM bought a few X pills from a trusted dealer who does ecstasy a lot and SWIM was told the pills were very strong so he would only need to take one, maybe even half of one. Later that night, SWIM took one pill, anxious to experience the sensation of MDMA, as this would be his first time. SWIM took the pill around 7 PM, water at the ready, just chillin and waitin. Around 12 PM, SWIM did not a feel a thing, so he decided to take the second pill. SWIM stayed up all night until about 6 AM waiting for something to happen, but ultimately nothing happened, he had not experienced any of the mentioned effects, or any feeling of high at all. SWIM was wondering if some people are just not effected by it or if the pills may have just been something else completely useless.