Bomb suits are gigantic and heavy. With plates of kevlar and plastic that overlap for life-saving redundancy, they can weigh as much as 80 pounds, each ounce both weighing you down and potentially saving your life. That's why, if you can avoid it, you should probably try not to fall over while wearing one. You might have some trouble getting up.
Case in point, a YouTube uploaded this video of his fiancee attempting that exact feat. Suffice it to say she does not have a ton of lucky. Granted, it seems like this suit is probably a little big for her. Also, she's probably not trained in using the thing. Then again, you probably aren't either, so the lesson still applies.