example: i was at work today and i felt high, like typical symptoms but i haven't smoked weed in like a week or something like that.

I felt relaxed, sleepy and shit was funny to me that usually isn't.

could it be that it is in my veins/system like nicotine stays in the smokers system and it kicked in?

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"Consider yourself warned,
I'm offensive and creative like handicapped porn"

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Maybe you just haven't slept enough.

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I got enough sleep last night. My usual 8 hour sleep.

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"Consider yourself warned,
I'm offensive and creative like handicapped porn"

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could it be that it is in my veins/system like nicotine stays in the smokers system and it kicked in?

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No, but it could easily be residual cannabinoids still attached to your brain. Weed gets you high primarily by binding THC and other cannabinoids to special receptors on your brain; over time the majority of the THC breaks off and you come down, but the rest can linger for a little bit. If you smoke a large amount this can cause you to feel some effects of pot without smoking, because on some level you're still very slightly stoned. It's entirely possible that you still had/ have some cannabinoids attached to receptors on your brain (for heavy smokers they can take up to a month of not smoking to be fully cleaned out), and that this is what was causing you to feel unusual.

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"Hey, that's not very nice, Mayor--
just because a person's gay doesn't mean he's a fag!"
-Stan