Effects - Normal effect from cannabis? Or something more?

[ihavequestions]

SWIM and his brother both get realy messed up on pot. they dont know why. the ffects are the following:

1.) very surreal feeling, derealization feeling and feeling of being in a dream but without all the crazy stuff happening and being sort of disconneted or detached from bodily senations. sometimes SWIM has to remind himself that he smoked some weed and that he is not dreaming.

2.)forgetting what SWIM is doing, for example he may be in the middle of a conversation and totaly forget what he was saying or what they were talking about. and then a few minutes later wonder if the conversation actualy happend or he just imagined it.

3.) realy spacing out and getting realy weird thought that snowball into other weird thoughts. there is no paranoia and there are no delusions. however the thoughts are just weird. once time swim spaced so bad that the cotton mouth was so bad he started gagging cause he couldnt swallow and was only somewhat aware of this and his friend had to snap him out of it and only then swim realized what was happening.

his brother also experiences these same effects from marijuana.

are these symptoms of being stoned, and swim is just a major lightweight when it comed to weed? or does this sound like something more, like a latent mental disorder? SWIM must also mention he is a hypochondriac. needless to say swim hasnt touched pot in a long time cause he hates the high because of all those feelings.

but does all the symptoms he decribed typical of being stoned and has nothing to worry about?