small dick energy

Noun

slang uncountable vulgar

(slang, vulgar) Lack of self-confidence; timidity, diffidence.

Japanese Meaning

自信のなさ / 臆病さ / 消極的な態度

He kept bragging about his job, but his nervous hands and lack of conviction gave off small dick energy.

彼は仕事の自慢ばかりしていたが、緊張して手が落ち着かない様子や確信のなさから、下品なスラングで言えば自信のなさがにじみ出ていた。

Sense（1）

(slang, vulgar) Lack of self-confidence; timidity, diffidence.