Toilet humour

Public reference to bodily functions such as urination and defecation is taboo in many cultures and thus arouses intense anxiety in many people. For this reason, there is a whole sub-genre of humour, toilet humor based around excretion. This genre is particularly popular with children.

Many artists have made their names promulgating toilet humor. Much of the lyrical content of avant garde rock musician Frank Zappa's songs revolved around toilet humor, eg, "Watch out where the huskies go, and don't you eat that yellow snow" (from the album Apostrophe). The humor of the animated series South Park also consists largely of toilet humor, even going so far as to have a talking piece of excrement as a major character. Dr. Slump, from Akira Toriyama, the creator of Dragonball, also had a strong scatological bent.

Toilet humour also refers to jokes around modesty, such as if one is seen naked or in his/her undergarments. It can also refer to jokes revolving around the incontinence of infants and young children.

Many forms of toilet humour involve euphemisms for excretion, such as the following:

Urination

A French whistle
Breaking the seal
Change water on the goldfish
Draining the dragon
Draining the main vein
Draining the radiator
Draining the one-eyed monster
Draining down the system
Go pee pee
Going to water my horse
Leak the lizard
Number one
Pass water
Piddle (considered a coarse expression in some quarters)
Pit stop
Pointing Percy at the porcelain
Punish the porcelain
Release the pressure
Relieve yourself
Seeing a man about a dog (or a horse)
Shaking hands with the vicar
Shaking the dew off the lily
Sprinkle
Tinkle
Steering Stanley to the stainless steel
Syphon the python
Taking a leak
Taking a pee
Taking a piss (considered a coarse expression in some quarters)
Taking a slash
Taking a whiz
Training Thomas on the terracotta
Twinkle
Visit Uncle Charley
Void my bladder
Going to walk my snake
Write my name in the water

Defecation

Back one out
Blasting a dookie
Cutting rope
Dropping anchor
Dropping a bomb
Dropping a deuce
Dropping a hoopsnake
Dropping bass ("base" as in the opposite of treble. Not the fish.)
Dropping some friends off at the pool
Dropping the Browns off at the Super Bowl
Dropping the kids off at school
Filling the bowl
Giving birth
Going poop poop
Launching torpedoes
Laying a cable
Laying a turd
Making logs (or a log)
Making waves
Makin' bears
Number two
Pebble-dashing the porcelain
Pinching off a loaf
Pinching a yam
Taking a brew
Taking a crap - see also Mr. Thomas Crapper
Taking a dump
Taking a shit (a coarse expression, not a euphemism)

Flatulence / Farting

Anal thunder
Ass-music
Beef-cloud
Blow a big one
Blow off
Botty burp
Break wind
Bust ass
Choke a donkey
Cut the cheese
Drop one's guts (as in "Who dropped their guts?")
Grunt (as in "Who grunted?")
Launching a growler
Let off a howler
Let off a stinker
Let rip
Pass gas
Pass wind
Trouser cough

Vomiting

Barfing
Blowing chunks
Bow down before the porcelain god (On some occasions, the worshiper vows to the god never to drink again.)
Chunder
Driving the porcelain bus
Feed the fish (when seasick)
Food Escape!
Hurling
Make like Mount St. Helens
Number three
Paint the sidewalk
Regurgitate
Revisit dinner
Park the tiger
Puking
Snow bank pizza
Spewing
Spraying McDonalds (as in "Did somebody spray McDonalds?")
Calling Huey (or Ralph) on the big white phone
Talking to the porcelain telephone
Talking to the weeds
Technicolor yawn
Un-eat
Upchuck
Yakking
Yorxing
Throwing up

Ambiguous

Going to the can
Going to the loo
Going where even the king goes alone
Going where even the emperor must go on foot
Paying a visit
Powdering one's nose
Taking a biological break
Taking a constitutional
Using the facilities
Answering nature's call