relieve
go
take care of business
relieve oneself
relieve nature
do one's business
make
ease oneself
use the toilet
nature
hit the head
wee-wee
incontinency
incontinence
take a leak
bleed the lizard
syphon the python
sissy
take a whiz
tinkle
piddle
strain the potatoes
pee-pee
do it
pee
piss
wazz
drain the dragon
micturate
shake hands with the unemployed
wee
drain the lizard
drain the main vein
drizzle
make water
pass water
tee-tee
whiz
leak
widdle
pittle
have an accident
answer the call of nature
do one's duty
emiction
miction
micturition
intermicturition
wring out one's sock
go potty