踏实小伙儿
[tà shí xiăo huŏ ér]
A straightforward, endearing way to refer to oneself as down-to-earth and reliable young man. '小伙儿' specifically denotes a young boy/man, and adding '踏实 (solid/reliable/down-to-earth)' before it adds an emphasis on positive character traits, such as reliability, stability, etc.