squishy, adj. — Green’s Dictionary of Slang

squishy adj.

[fig. use of SE squish, to move through soft substances with a ‘squishy’ sound]

1. (US) sentimental, mawkish.

1953		Freckles in News and Observer (Raleigh, NC) 9 Mar. 15/7: Everyone knows you’re squishy about Miss Springtime! [OED].
2011		J. Yardley Second Reading 139: What most struck me upon reading it [i.e. The Catcher in the Rye] for a second time was how sentimental—how outright squishy—it is.

2. (US campus) attractive; underlying sense is of huggability.

1999

Eble Campus Sl. Apr. 7: squishy – cute, good-looking (said of babies, males).