Barmaid with a real sense of humor.
“真”幽默的服务生

An Australian "prankster" barmaid served a patron a shot of disinfectant. She has appeared in court over what her lawyers said was a "misguided" joke.

The barmaid "was known for her prankster-style behavior." The local court was told that the drink caused the patron to become violently ill.

The patron developed ulcers on his skin after drinking the disinfectant shot. The barmaid has since lost her job and faces four charges of intentionally causing injury.

prankster someone who plays practical jokes on others  .
One who plays tricks or pranks.
 恶作剧者恶作剧或开玩笑的人 
 
barmaid a female bartender - an employee who mixes and serves alcoholic drinks at a bar 酒吧女服务员；女招待  barman//bartender
 
patron a regular customer
 
disinfectant Agent that inhibits the growth of or destroys harmful microorganisms such as bacteria. 
污染物, 传染物

disinfect消毒 disinfectant消毒剂
 
disinfector 消毒器具, 消毒者, 消毒剂
 
violently fierce: marked by extreme intensity of emotions or convictions;
 
ulcers A lesion on the surface of the skin or on a mucous surface, caused by superficial loss of tissue, usually with inflammation. Usually associated with the stomach