Opinions - Thought about taking LSD too hard?

[M3th]

Alright, the other day my homeboy swim decided to trip for the first time with some friends. Four hits were purchased by swim and his pet friends. They were white blotters that were supposedly double dipped promising a dose around 200 mics. These were guaranteed good by the friend. Swim and two friends put their hits under their tongues and waited. Swim was going to hold it there until it got soggy and then swallow it, but as he put it under his tongue one of his friends said to only hold it there for 10 seconds. Which he believes is still long enough. He took it out after about a minute and then waited..

He waited all night.. Nothing came. He felt very giddy for about an hour.. No visuals came to him. All night. Two of swims friends tripped hard. His one experienced trippper said it was very good acid. But swims question is why didn't he trip? His friend said he thought about it too hard, which swim didn't think he did. He would try and keep himself occupied and his mind off of the wait. But the trip never came on.

Why would swim not trip but two of his other friends did?