Green’s Dictionary of Slang

watery-headed adj.

also water-headed

tearful, prone to crying; thus watery head n., one who cries.

[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc. 191: A watery head hath the wife, whose nob, like Niobe’s, is all tears.
[UK]Egan Finish to the Adventures of Tom and Jerry (1889) 149: She was apprehensive that watery-headed jack would never get over his troubles without ‘piping his eyes.’.
[UK]Swell’s Night Guide 135/2: Water-headed, a snivelling fellow.
[UK]E. de la Bédollière Londres et les Anglais 318/2: watery headed, individu à tête humide, qui pleure aisément.
[UK]J. Greenwood Little Ragamuffin 115: We don’t want no snivellin’ in our wan neither, so I can tell yer, jolly young watery head!
[UK]Boy’s Own Paper 13 May 518: Gahn, old watery head! Piped his eye ’cause he warn’t going.