(David is standing by a bench with a "Wet Paint" sign. Gordon enters.)

David: Wet paint.

(Gordon sits on bench.)

David: Never sit where you see "Wet Paint."
'Cause if you do, you might say, "Yipes!"
When your brand new clothes are covered with stripes!

(Gordon gets up and finds paint stripes on his clothes.)

David: Wet paint!
It's so sloppy!
Wet paint!
It's so gloppy!
Wet paint!
Stay away from wet paint.

(David walks over to Maria, who is standing by a lamp-post with a "Wet Paint" sign.)

David: Wet paint!
Never touch where you see "Wet Paint."

(Maria touches lamp-post, then stops and pulls away her hand, which is now covered with paint.)

David: 'Cause if you do, please understand,
You'll have gunky paint all over your hand!
Wet paint!
It's so sticky!
Wet paint!
Really icky!
Wet paint!
Stay away from wet paint.

(I don't remember most of the words to the last verse, except that Gordon and Maria cover David with paint and hang a "Wet Paint" sign on him.)

(?)
Gordon and Maria: And we'll hang a "Wet Paint" sign on you!
Wet paint!
(?)
Wet paint!
(?)
Wet paint!
Stay away from wet paint!
Wet paint!