Pioneers in Bitcoin mining, Bill and Fred believe that dressing the part increases return on investment. Give us your funniest captions! Share them in the comments section below and you'll be in the running to win a MakeUseOf t-shirt. Submit as many as you want, each comment counts as one entry into the contest. Good luck!

The winning caption for "Email Mania" is awarded to Leo O. and his submission, "Looks like your spam blocker license has ended!"