No secret's safe from me!(Gumball,Anais)

"So, did you tell him?" Anais asked Darwin secretively. "No. He must never find out about it..." Darwin replied. Both of them looked guilty for a split second before laughing out loud. Little did they know...
Gumball was actually eavesdropping on them through the toilet door. So the secret WASN'T about a sandwich. Darwin lied. Gumball could not get it out of Darwin...but he could try Anais. But how? Gumball scratched his head. The last time he tried, he poked her continuously on her head to annoy her into telling him. Well, that only got him a great big bruise. Was there a way to get his little sister to crack without getting his own face mashed by a little girl? Gumball soon thought of an idea.
Darwin had to go to the mall with Mum and Dad, leaving Gumball and Anais alone in the house. "Perfect!" Gumball immediately set to work. He ran to Anais's room. The girl obviously heard her brother thumping up the stairs. "What is it now, Gumball?" Anais rolled her eyes. Gumball strode in like a police inspector. "You know why the secret is don't you, " Gumball said. Anais flinched at the subject. "The sandwich?" Anais asked innocently. Gumball stared sarcastically at her, "Yes! Like I'm here to discuss a sandwich! How obvious!" Gumball approached Anais slowly. "Gumball, I'm trying to work..." Anais tried to cook up an excuse. Too late. Like a bolt of thunder, Gumball shot behind Anais's chair and wrapped his left arm on Anais, ensuring she didn't leave too soon. "Wha-what are you doing?!" Anais was a little annoyed but knew it wouldn't be good to hang around. Gumball poked Anais on her side, causing her to squeak. "EEK! Gumball! Don't!" Anais struggled harder, but to no avail. "I can, but you have to tell me," Gumbal said as he teased her stomach. "N-hohoho! Hahahaha Gehehehet ouhohout!!!" Anais tried to push Gumballs arm away, but this only allowed Gumball to pin her arms above her head. Gumball smiled and lifted her shirt by a fraction, exposing her little bellybutton. Anais could only try to suck in her stomach. Gumball wasn't detered one bit. He poked his pinkie into Anais' naval, causing her to buckle and giggle. "AAH! Wahahahait!!! Nohoho Sthahahahap!! Iihihihit tihihickles!!!!!" Anais could only kick out at thin air with her legs. Gumball stopped briefly. "Tell me the secret now an I'll stop," Gumball said. "No! It's for your own good!" Anahi's tried to argue, but was rudely cut short by Gumball's wiggling fingers. "HAHAHAHAHA stop tihickling mihihihy stomamamach!!!" Anais laughed hard as Gumball scratched her sensitive belly.
"Okay," Gumball stopped, only to move to her armpits. He gently tickled her armpits, causing her to squeal with laughter. "Nohohoho! Dohohohon't" Anais almost kicked Gumball's face. "Tell meeee," Gumball said, trying to sound like an evil madman. At the same time, he snuck his hand down into Anais' sleeve and tickled her bare armpit. "AHAHAHAHAHAHAHAHAHA STOP GUJUHUMBALLL HAHAHAHAHA!!! OHOHKAY IHIHIL SAHAHAHAY!!!!" Anais finally cracked. As Gumball let go, Anais panted and tried to catch her breath. "Wepostedavideoofyouontheinternetandnowithas900millionviews," Anais said in one long breath, desperately hoping that Gumball didn't catch it. Unfortunately, Gumball did catch it. "What!?" Gumball shrieked. Anais knew what was coming next. "Oh.. I'm gonna get you!" Gumball lunged, but Anais ducked and ran.
Gumball chased Anais for quite sometime until both of them ran out of steam. "You know, sometimes, you just can't hide anything from me," Gumball told his sister smugly.