GIR; I was a chubby lady hiding in the bushes
I’M ON TV!
And then the squirrel ate Dib’s greasy head
GIR guarding the house, Gaz walks in
GIR; I’m guarding the houuuuuuse!
Gaz; where’s Zim?
GIR; <Duty mode> YOU ARE AN INTRUUUUDER! <weaponry comes out of his head>
Gaz; Where’s Zim?
GIR; <normal> he’s right over there <points>
This was going to be my contribution but I see I was beat to it. Terrific episode and never fails to make me laugh out loud.
My 8-year-old son does a great GIR voice. He’s funny in that he always prefers to watch the DVDs with the commentary on, yet he still knows most of GIR’s lines. GIR steals every scene he’s in.
I believe this one is in Bestest Friend: the doorbell rings, and GIR goes to answer it, saying to himself out loud what he (presumably) expects to be at the door: “Leprechauns!”
I also love (and often imitate) the exchange between Zim and GIR in Bad, Bad Rubber Piggy:
GIR: What is it?
Zim: A hunter-destroyer…
GIR: What is it?
Zim: A hunter-destroyer…
GIR What is it?
etc.
GIR (opening mouth widely after sipping from shake cup): I got chocolate-bubblegum!
and
Zim: You left the window open, too?
GIR: Oh, yeah!
and
GIR (looking at wall o’ televisions): This is my favorite show! (looks at different TV set) No, this is my favorite show. (looks at different TV set) My favorite show! (hugs yet another TV set) I love this show!
I’ve only seen volume one (stolen from my nephew) and sporadic episodes that I happen to catch at random when at the house of someone who has cable.
Strangely enough, GIR running around like a madman yelling “I’m running, I’m running, I’m running…I’M NAKED!” reminds me of my 2-year-old nephew.