[X] Eep Opp Ork Ah Ah Means Meet Me Tonight
Okay. You don't know how much the ANBU guy overheard. You didn't hear his chakra until right after you said Jigen's name, so best case scenario (which you're not prepared to assume) he didn't arrive until then. More likely he's been here the whole time and he's letting you hear him as an early-warning not to throw the first punch in what probably does look like a fight waiting to happen to someone not in on the joke. Best to keep this discreet.
"BWAHAHA~!" You guffaw, doubling over and slapping Jigen companionably on the shoulder, twice: we're being watched. "Y-your nickname is based on the fact that you're three-dimensional*? I guess your puppets really are your girlfriends, huh?"
"Y-you...!" he growls, clenching his fists twice: where and how many?
Oh, holy crap, what the hell kind of shitpit is Suna that he thinks that means I want him to ice the eavesdropper? ._.;
"Ah, ah, ah! Save it for the ring, buster!" You flick your cigarette down the alley. "Don't wanna get the ANBU all hot and bothered, do ya? Or maybe you're conductin' a scientific experiment and you wanna see what happens when you get hit by a jyuuken vacuum-attack coming from one direction and a Nikudan Sensha from the other?" You open the door back into the resto-bar.
"If we're just gonna talk, let's talk inside, friendly-like." No sense letting them know you know they've got a guy in there.
After a moment, Jigen nods.
As he passes you, you slip another note into his pocket. It reads,
[X] Empty booth, in the front window. If they can see you clearly, they're less likely to care what you're actually saying to each other. The peeping tom only made himself known when you guys were in a secluded area, after all.
[X] Shikamaru's booth. This calls for a Throning, which calls for having someone on hand to watch your bodies and make excuses for both of you.
[X] Tomorrow (location write-in). Go to Shikamaru's booth and have a conversation with Kankuro to further throw them off the scent. And also to get to know the guy; I mean, just 'cause he's Jigen that doesn't mean he isn't also himself, does it?
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*"sanjigen" literally means 3D.