During a TV appearance, Junior enters the set alone, having to justify that Sandy's busy backstage (many presume she was still in the toilet at the time), which prompts the host to ask him if he can perform a song on his own. Junior, more used to being the Lesser Star of the duo, is left sheepishly scratching his head until Sandy finally comes in.
The end of the video for "Desperdiçou", in which Junior is arrested for his kidnapping of the bride, only for her to run towards him and pin him to the police car for a Big Damn Kiss. Cut to Sandy, clearly amused at this.
Performances of "Maria Chiquinha" from later in their career have them get into the characters a lot more than they did as kids, especially Sandy, who's usually seen biting her nails and looking panicked as Junior sings his/Genaro's lines. The pinnacle of this comes with this performance from the TV series, eleven years after they first performed the song on Som Brasil.
The banter from "Baby, Liga Pra Mim", in which Sandy keeps answering the phone expecting the boy she likes to be on the other side of the line, only for the voice on the phone (provided by Rodrigo Santoro in the original studio recording) to keep asking for a different person.
Sandy: No way, it has to be him now!
Junior: I doubt it, Sandy!
Sandy: Oh, stop it, Ju! Sheesh...
Junior: Sandy, he's not going to call.
Sandy: Wanna bet?
Junior: Uh-huh!
Sandy:[answers the phone] Hello?
Voice on the other side: Uh, excuse me, is Claudia there?
Also from the Maracanã concert, during Junior's Mickey Mousingbreakdown in "Enrosca", at one point a Stock Scream is heard, followed by a thud. Cue Junior saying "My bad!" before continuing on with the song.
This tweet, in which the user in question comments that his 18-year-old brother is familiar with Junior thanks to Pipocando Música, but didn't know who Sandy was.
When I told him that [Junior] was once part of a double act with his sister, he didn't hesitate and commented: "Must be tough to live in your brother's shadow, huh?" The tables, my friends, they have turned.
Junior: ...And, like, when we performed it at our concerts, we split the audience and were like, "This side just goes 'MY' and the other goes 'DING-A-LING'!" Then we were like, "MY! DING-A-LING!" Everybody singing that! I think even I didn't understand how bad that s**t was!