1.Ask him when his in his house or hideout or anything that looks like it might be a house "Hey sasuke,I thought you lived in a pond."
2.Pick a new nickname for him,either duckbutt or something.
3.Yell when his talking to someone,"SASUNARU IS THE BEST YAOI SHIPP"
4.give him a naruto plushie and say, "Take good care of him,he really wants to kiss you- I mean be with you." Then walk off.
5.Look at him then the back of his shirt and say, "woah,you play Pokémon?"
6.Fangirl over him with the other fan girl and/or Sakura.
7.Yell out embarrassing things about him to random people like,"SASUKE FIRST AND SECOND KISS WAS NARUTO!"
8.When his near you say,"Sasuke and Naruto kissing in a tree,K-I-S-S-I-N-G,first comes the baby then-" and so on.
9.Get a duck when his near you and say "Hey Sasuke! What's up!"to the duck.
10.Write a love letter for any of his fan girls or boys Then tell them that Sasuke wrote it,or sign it by Sasuke.
11.When his near Yell,"OH MAI GOD ITS A WALKING DUCK!"
13.Stalk him until he noticed you and say "MISSION ABORAD! DUCK HAS SPOTTED US! I REPEAT! DUCK HAS SPOTTED US! (Random character that sasuke dislike)"
14.Read a sasuke x reader/naruto lemon/story with him.force him to.
15.Get a picture...Edit his hair to look like a duck (or get one from the internet) and show it to sasuke and then the whole village.
16.Sell his number at eBay or his fangirls...should get you a whole lotta money..
17. Tell him itachi is hotter then him and you wanna date him.Hehe..But don't break poor sasuducks feeling.
18.Everytime he talks,Make a duck quack or just get a video and do that.
19,addition to number 18,Make a duck quack everytime he walks.
20.Throw bread at him.
BONUS.
21.Look at him straight in the eye and say.."Quack ducky..quack."or just. "Quack".