When you ask Europeans (who aren't from English speaking countries) whether they speak English, they usually answer saying "little" even if they speak well enough.
When you meet Nigerians in/on the streets of Europe, and you ask them if they speaks English (because you don't know if they're Nigerians), they'd answer "YES" or "of course" if they're in good moods, and if in bad moods, they'd get offended saying "what sort of question is that?".
But in some real cases, the people who say they speak a "little" actually speak the little in good commands, and it is easier for the English people to understand them than the Nigerians who claim English is their in-built talent.
Believe me, some of our English usages are really embarrassing. I know some guys who can't converse on phone with people who are not Nigerians: the accents are terrible and the English commands or usage are awful: it would be easier if the non Nigerians can read their lips, but that doesn't happen on phone.
I've even heard some Igbo guys calling it Engrish or Engnish
There was this Edo girl who was repatriated at Dublin airport, she had a tourist/visiting visa, when asked by the immigration officer at the point of entry her purpose of visiting, she ignorantly answered "terrorist", and this led to further questions and interrogations. They knew that she was innocent and ignorant, but the immigration officers found enough reasons to send her back to Nigeria on the ground that they were "not satisfied that she merited her visa"
Some Nigerians haven't mastered the simple English, yet they try to fake American accents even with their awful command of the language.
Also, here in Nairaland, sometimes, it is difficult to read and understand some articles in this forum, Though, wrong spellings could be pardoned (none is above mistakes), and it's also understandable when people misuse words (for example they misuse BEING for BEEN) and also, many people try to use "short cuts" words like DATZ Y, 4RM, HOLZ, and WUD etc, as if they are sending sms from mobile phones where spaces are limited: this makes other users sometimes read over and over and over again just to get the points that a poster is trying to make. Sometimes, i really try hard to get the points of some posts, and still i don't get the full meaning.
I blame the pidgin English for our poor English, this sort of English has deeply influenced our usage of the standard English, even our learned people sometimes find themselves in difficulties trying to express some points which they can easily expressed in pidgin English.
How many of you now hate me?

i cant say i hate you because its a freedom of speech. na free it was given to you and na free u dey use am. lol. Job well done, Keep it up