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

Much of the lyrical content of avant garde rock musician Frank Zappa's songs revolved around toilet humour, eg, "Watch out where the huskies go, and don't you eat that yellow snow" (from the album Apostrophe)

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
  • Go pee pee
  • Leak the lizard
  • Number one
  • Pass water
  • Piddle (considered a coarse expression in some quarters)
  • Piss stop
  • Pointing Percy at the porcelain
  • Release the pressure
  • Relieve yourself
  • Seeing a man about a dog (or a horse)
  • Shaking hands with the vicar
  • 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
  • Write my name in the water

Defecation
  • Blasting a dookie
  • Dropping a bomb
  • Dropping some friends off at the pool
  • Dropping the kids off at school
  • Filling the bowl
  • Giving birth
  • Going poop poop
  • Launching torpedos
  • Laying a cable
  • 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
  • Blow a big one
  • Blow off
  • Botty burp
  • Break wind
  • Cut the cheese
  • Drop one's guts (as in "Who dropped their guts?")
  • Fart
  • Grunt (as in "Who grunted?")
  • 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
  • Feed the fish (when seasick)
  • Park the tiger
  • Snow bank pizza
  • Spewing
  • Talking to Huey (or Ralph) on the big white phone
  • Talking to the porcelain telephone
  • Talking to the weeds
  • Technicolor yawn
  • Yakking
  • Yorxing

Ambiguous
  • Going to the can
  • Going to the loo
  • Going where even the king goes alone
  • Paying a visit
  • Powdering one's nose
  • Taking a biological break
  • Taking a constitutional
  • Using the facilities

See also: Scatology, gross-out film, lighting farts