Roleplaying is, at its heart, a means of socialising with friends. People you have fun with, can share a joke with, and generally trust to share good times. This air of camaraderie allows you to relax your inhibitions, open up, and express yourself freely, on the shared knowledge that it's all in fun and nobody needs to be too serious about the whole business.
This mutual respect and support can, however, take a long time to cultivate. You need to ease into it slowly, and develop the relationship with your fellow players gradually, earning their trust in the only way it can be earned. Time.
So if someone you've known for less than about ten years offers you their "special" dice... be very, very wary.
Obi-Wan: I try to get close enough to hit Grievous.
GM: That exposes you to three Enhanced Speed laser sword attacks. <roll> <roll> <roll>
GM: If you Dodge three times you can get one strike in at -3.
[SFX]: Whooom! Whooom!
Obi-Wan: The odds are against me. I'm never going to win unless I take a risk here.
R2-D2: Want my special dice?
Obi-Wan: Hey, thanks. I'm... truly honoured.
Obi-Wan: 17, 10, 14. And 20!
R2-D2: Huh. That's the first time that set's ever not rolled a 1.
GM: You miraculously evade the deadly blades and slice off another arm.
[SFX]: Whooom! Slice!
Yoda: "Obi-Wan gains Upper Hand in Desperate Battle!"
Yoda: I'm writing a report for the news!
R2-D2: Weren't you writing a novel?
Yoda: Get with it, Pete. Fast, punchy reporting is the new media style. "Sally's Journalism Career Taking Off!"
Obi-Wan: She's been like this since Wednesday.
Yoda: "Jealous Brother stuck in Dead-end Degree Doldrums!"