~ Dort busseln zwoa Lieabste am Zaun, das es knallt ~
This is in dialect and the meaning is clear, but I'm not sure if the two intent lovers are going to fall over the wall or if the wall is going to fall over with them on it. The stein is marked with the Rheinhold Merkelbach logo and mold/decoration number "433 D".
Dort busseln zwoa Lieabste am Zaun, das es knallt. Mi wundert , das drüber der Zaun nit umfallt.	Over there are two lovers smooching so hard on the wall, that it is bursting. I wonder if they won't fall over the wall.

Translation: Roy De Selms Photo credit: Unknown