Just got done pretending that I cannot speak English to a phone solicitor.
It was 8:15 AM when the phone rang.Me being in a fun mood decided to use my newly acquired "'language skills'" to avoid communicating with the sales person calling way to early.
Answers the Phone
Me: ¿ allo ?
Sales Person: Hello
Me: ¿ allo ?
Sales Peron: Hello ? Do you speak English?
Me: Lo siento, actualmente no puedo hablar en Ingles.
Sales persona hangs up.
That's really funny, but you have to be careful. Sometimes, "people" call just to hear you say "yes" or "no" or anything (even in another language). Then they use that to order stuff from your accounts. (By the way, somebody called me once saying I had a virus on my computer connected to the internet, but I didn't have any computer that had EVER my connected to the internet!)
I did this once with German when I was young. The sales lady called over to one of her buddies to ask "how do you say...", which I responded when she asked me in German, and she was like "lol, i don't really speak German". I eventually hung out and rolled on the floor laughing.
I had a buddy in college who would occasionally pretend not to speak English, but only French (mainly when strangers tried to get his attention). It backfired on him once when a Chinese professor also spoke French.