I believe it was pretty common in the London area...about 400 years ago.Would you be kind enough to tell me whether the word in bold is a common occurance in your area?
"I filmed a short video for you - it's giving you an idea which methinks will slip a tingle scampering up your spine."
Seriously...it's archaic. Seriously archaic. The writer is deliberately trying to be funny, which we do occasionally by trying to imitate Shakespeare (and failing, as a rule). The last person to use this word with a straight face was Hamlet when he said to Horatio: "My fatherŚmethinks I see my father."
Student or Learner