I Challenge Gavin is where young Gavin sets his fears (and sometimes dignity) aside, and bravely accepts the task people challenge him to do. Today's challenge comes from me after I saw Hellmann's post about putting mayonnaise in your coffee. Gavin drinks coffee and he loves mayonnaise so, what could go wrong? [fluidvideo url="https://www.youtube.com/embed/dVwU6ID2i9s"]