C'est comme pisser dans un violon.
Expression USED On Occasion BY Some People
(It's like pissing in a violin.) • Used to describe something useless and ineffective, or to complain about not being listened to after asking somebody to do something. Pissing in a violin is ineffective, it won't make a sound.
"Quand je demande à ma fille de ranger ma chambre, c'est comme pisser dans un violon !"
"When I ask my daughter to clean her room, it's like pissing in a violin!"
con comme une valise sans poignées
Expression USED On Occasion BY Some people
(dumb like a suitcase without handles) • Used to describe someone who is really dumb.
"Je ne peux pas le voir ce type, il est con comme une valise sans poignées."
"I can't stand this guy, he's dumb like a suitcase without handles."
Standard Phrase USED Frequently BY Everyone
(n.) • (Shit !) • Used to wish good luck to someone when we want to avoid the actual "good luck" expression since it is believed that saying it actually brings bad luck.
"Merde pour l'examen de demain !"
"Shit for tomorrow's exam!"
æ
Acronym USED Very frequently BY Young People
Acronym for "j'en peux plus", meaning "I can't take it anymore". Initially used in text messages but now frequently heard in speech, pronounced not as "j'en peux plus" but as each letter sounds in the French alphabet. Used whenever we are tired by or annoyed at something.
"Mon ex n'arrête pas de m'appeler, jpp !"
"My ex won't stop calling me, I can't take it anymore!"