Normally roleplayers wouldn't let anyone else make a dice roll for them, doubly so a critical roll such as this. But extreme circumstances sometimes dictate equally extreme measures.
GM: Jim, roll for system shock. Roll well.
R2-D2: I have special system shock dice! 20% you say? Here, these two.
GM: Right. I'll just send them over the Internet for Jim to roll.
Han: It's okay, Pete. I trust you to roll for me.
R2-D2: Are you insane?? I haven't warmed up! I'm not ready for this responsibility!
Han: You're a lot warmer than me. Go for it. I believe in you.
R2-D2: I... don't know what to say... So I'm gonna say it real quick.
R2-D2: I love you, man.
Han: I know.