我叫雷疯
[wŏ jiào léi fēng]
'Lei Feng' is likely a personal name here. The word play lies in the similarity to Lei Feng, the celebrated model soldier and iconic figure of selflessness in China. However, instead of being an exemplary person for his helpful deeds like the famous Lei Feng, this person humorously calls himself '雷疯' which suggests he might be unconventional or a bit crazy. It has both humorous intent and some self-depreciation. In English it could be understood as a playful way of saying: 'My name is Thunder Crazy.'