Kelso: You know, being up here makes me think of our poor friend Billy.
Fez: His name was Charlie, you cantaloupe.
Donna: Kelso, you've fallen off this thing, like, 10 times. It's so scary to think you could have, you know, like, met the same fate as Charlie.
Kelso: Yeah. It's like we go through our life, like, thinking we're invincible, right, but the truth is, we're totally vincible.
[When Kelso leans on a railing and it gives way, he falls off the water tower]
Kelso: [o.s.] Screw that! I'm invincible!