Gravity Falls inspired starters:

1: “I rigged it!”
2: “Heh heh, gullible.”
3: “That was just an accident with the leaf blower.”
4: “For the fifth time, it’s not an actual face!”
5: “You know, this is all really just a big misunderstanding.”
6: “You guys are butt-faces!”
7: “What is that, a woodpecker?”
8: “__________, are you wearing a blindfold?”
9: “Sweet! Beaver with a chainsaw!”
10: “Hey, wanna hear a joke?”
11: “Okay, here goes. My ex-wife still misses me…but her aim is gettin’ better!”
12: “See, it’s funny, ’cause marriage is terrible!”
13: “WHAT?!”
14: “We’ve got a big break in the case!”
15: “Oh yeah! That makes perfect sense! That was totally worth the drive!”
16: “What’s going on?”
17: “Hey dude! Ready to blow up these hot dogs in the microwave one by one?”
18: “What the heck happened on that date?”
19: “Yeah, I’m the guy who spray painted the water tower.”
20: “I can’t find the remote and I refuse to stand up!”