Now how did that ...

Thing to do in the bathroom stall...
Say, "Now how did that get there?"

http://www.101funjokes.com/bathroom_stall_jokes.htm

Boy, that sure looks ...

Thing to do in the bathroom stall...
Say, "Boy, that sure looks like a maggot"

http://www.jokes-db.com/jokes/bathroom-stall-jokes

C`mon Mr. Happy...

Thing to do in the bathroom stall...
Say. "C`mon Mr. Happy! Don`t fall asleep on me!!"

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Using a small squeeze tube...

Thing to do in the bathroom stall...
Using a small squeeze tube, spread peanut butter on a wad of toilet paper and drop it under the stall wall of your neighbor. Then say, "Whoops, could you kick that back over here, please?"

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Interesting....

Thing to do in the bathroom stall...
Say, "Interesting....more sinkers than floaters.

Drop a marble and say, "oh shoot"!!

Thing to do in the bathroom stall...
Drop a marble and say, "oh shoot!! My glass eye!!"

http://www.lotsofjokes.com/bathroom_stall_fun.asp

Humus. Reminds me of humus.

Thing to do in the bathroom stall...
Say, "Humus. Reminds me of humus."

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Now how did that get there?

Thing to do in the bathroom stall...
Say, "Now how did that get there?"

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Grunt and strain real loud...

Thing to do in the bathroom stall...
Grunt and strain real loud for 30 seconds and then drop a cantaloupe into the toilet bowl from a high place six to eight feet. Sigh relaxingly.

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Darn, this water is cold.

Thing to do in the bathroom stall...
Say "Darn, this water is cold."

Grunt and strain real ...

Things to do in the bathroom stall...
Grunt and strain real loud for 30 seconds and then drop a cantaloupe into the toilet bowl from a high place six to eight feet. Sigh relaxingly.

http://www.lotsofjokes.com/bathroom_stall_fun.asp

Hmmm, I`ve never seen...

Thing to do in the bathroom stall...
Say, "Hmmm, I`ve never seen that color before."

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Cheer and clap loudly...

Thing to do in the bathroom stall...
Cheer and clap loudly every time somebody breaks the silence with a bodily function noise.

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Say "Uh oh, I knew...

Thing to do in the bathroom stall...
Say "Uh oh, I knew I shouldn`t put my lips on that."

http://www.jokes-db.com/jokes/bathroom-stall-jokes

Thing to do in the...

Thing to do in the bathroom stall...
Stick your palm open under the stall wall and ask your neighbor, "May I borrow a highlighter?"