perspiration / sweat / CL:滴[di1],頭|头[tou2],身[shen1] / to be speechless (out of helplessness, embarrassment etc) (Internet slang used as an interjection)
碍口识羞
ài kǒu shí xiū
tongue-tied for fear of embarrassment (idiom)
碍难从命
ài nán cóng mìng
difficult to obey orders (idiom) / much to my embarrassment, I am unable to comply
扭扭捏捏
niǔ niǔ niē niē
affecting shyness or embarrassment / coy / mincing (walk, manner of speech) / mannered