Okay, relatable comments for the post "testing":

**Option 1 (Humorous/Self-Deprecating):**

"Testing...testing...is this thing on? 😂"

**Option 2 (Curious/Engaging):**

"Testing what? Now I'm curious!"

**Option 3 (Simple/Supportive):**

"Testing, good luck!"

**Option 4 (Relatable to social media):**

"Story of my life. Always testing!"

Choose the one that best fits the context and your personality!