English flu 

When a culture or place is destroyed by English tourists

Oh fuck. Benidorm just died of English flu.

English flu by themilkofothers January 16, 2015

Englishful 

adj. describing an absolute completeness in knowing and understanding every aspect of English language.

1) Thanks to Urban Dictionary I finally feel Englishful.
2) Your English is not Englishful, if you don't know about Urban Dictionary.

Englishful by copyded February 13, 2018