It's alright you didn't ruin the joke as it's not a joke just a pun and not a very good onepun. Anyway, I was the first on here who pointed out that DesperatDan was on Soros's payroll.Joke.
Phlegm=mucous i.e. something old george might cough up
Dan72= something george soros might also cough up (a neoliberal open borders pro EU ideologue) or "cough up" to fund!
ergo Dan72 is phlegmish (pun on Flemish)
Ruins the joke if you have to explain it to people!