Have a nice summer

A stock phrase signed by high school students in a yearbook of a classmate they have no previous memory of ever encountering.

Mentioned during the first season of Buffy the Vampire Slayer in the episode 'Out of Mind, Out of Sight', when a student of Sunnydale High who had turned invisible was revealed to have a yearbook filled with the generic sentiment.

Harmony: That girl just gave me her yearbook to sign but I have no clue who she is!
Cordelia: Just write "Have a nice summer" in it and hand it back.

the english have landed

Definitely one of the strangest French idiom out there. It translates as “The English have landed” (from a boat). So, what is the relation between the English and menstruating? Well, this expression dates back to Napoleon and the British army, then called the redcoats. Go figure!

Guy 1: Dude, don’t fuck with her today.

Guy 2: “Why?”
Guy 1: “Because mans she’s pissy. “The English have landed.”

we have arrived

When one reaches the finish line, or otherwise achieves a victory that required great endurance.

Call to all you fake-ass DJ’s rocking dusty beats / Attention: we have arrived.

have a nonstick do

A greeting being used in more and more of the UK, meaning, i hope your poo doesn’t stick to the toilet. A substitute for a ‘good morning’ / ‘goodbye’

Person 1 : right i better be off then mate
Person 2 : ah see ya, have a nonstick do

im having a stroke

im having a stroke you say when you repletely mess up a word when talking

1: Hey did you know i hate sidpers

2: what
1: spdier
2: you good
1: Im having a stroke
3: r/Ihadasrtoke
3: damn it

i have no money

when you are absolutely fucking money-less, nothing, no moo-lah, nothing at all and yer name is josh oates min

skinto sir: said josh oates min

i have no money

have your back

when you have a friend that would do you a solid or mutual respect

tom said "yo man can you help me with my relationship issues? "

And toms best friend, Bill said " ya i have your back"