A case in point: this tweet she's posted about the seemingly inexplicable nicknames that some straight men give to their friends.
In a follow-up tweet, Coughlan added equally hilariously: "And the reasons for the nicknames are always terrible.
"'Why is he called Egg?' 'Oh he once had an egg sandwich for his lunch in a school trip in 1996'. That is pretty much always the reason."
Coughlan's original tweet is so spot-on that it's been liked more than 37,000 (!) times. It's also attracted some memorable responses from people wanting to share the random male nicknames they've heard over the years.
Check out some of the funniest below.
Back in the 90s a young lad turned up to school wearing something with purple on it— tan97 (@twiceasnice97) August 16, 2019
Unfortunately for him prince was a big star and the lads name was Wayne
Qed Purple Wayne
My brother was known as 'Moley' to his mates during secondary school after having a haircut that made him vaguely resemble a mole. ?♀️— Hayley Moore (@HaylzMoore92) August 17, 2019
I therefore became 'Moley's sister' when I rolled up ?♀️
Others pointed out that it's not just men who give themselves – or sometimes choose – random nicknames that prove difficult to shift.
While teaching a group of Catering student they decided that I looked like a Barbara! One of them still shouts “Hello Barbara” to me in the street nearly 10 years later!— Amanda Kelly (@Functionalise) August 17, 2019
My husband does not have these friends. I do though....— Flossie McGhee (@flossiebella) August 17, 2019
One of them is called Oscar, because in 2004 she changed into a different dress halfway through a formal event.
I knew a girl whose real name is Laura, but there were 2 Lauras in her form so one day on a total whim she chose herself a new name. No rhyme or reason behind her choice, she just said the first name that popped into her head, but 2 decades later she still goes by "Hetti"— Red Jam Spear (@jamesdraper) August 17, 2019
By now, you're probably recalling a load of weird nicknames given to people you went to school with. And if you know (or even are) an "Egg", just remember there are many, many worse names to be called. My surname is Levine, which not so helpfully rhymes with... this. Thankfully it didn't stick!