In Shanghainese, saying 'wèidào diǎ' means the flavor is great.
Tips
culture
A relatively young character (19th century) coined for the Shanghai/Wu sound. The mainstream Mandarin sense 'cutesy/coquettish' (often via 撒娇 sājiāo) became national slang from 上海话; reduplicated as 嗲嗲 or in 嗲声嗲气 it describes that breathy, drawn-out feminine speech style.
register
Informal - applied to women is descriptive; applied to men it's mocking. Original Wu meaning 'top-quality / awesome' survives in Shanghai food talk: 这家小笼嗲得很 ('these xiaolongbao are killer').
Three-stroke mouth radical on the left, the indexing radical. 嗲 names the affectedly cute, drawn-out, pleading manner of speaking known in Shanghai dialect - purely a verbal mannerism. Groups with 哈 ha, 哎 ow, 嗯 mm, 啦 la - the modal particles.
Right side 爹 supplies the sound - diē shifting to diǎ with a vowel and tone change. 嗲 is a colloquial coinage of the Wu dialects describing the wheedling baby-talk one might use to a doting father - so there is a quiet pragmatic echo if you reach for it.
