Finding synonyms for a phrase like "dost top your head" can be a bit challenging. This phrase is typically used to mean that you advise someone to do something without much thought or plan. Some potential alternatives might be "off the cuff," "impulsive," "spontaneous," "careless," or "reckless." Each of these words captures a slightly different aspect of the original phrase, but they all convey a sense of hasty decision-making or action without much consideration for the consequences. If you're looking for a way to express this concept in a different way, any of these synonyms might be a good starting point depending on the context and tone you want to convey.