What is the meaning of Sappy?
Excessively sweet, emotional, nostalgic; cheesy; mushy. (British equivalent: soppy)
Having (a particularly large amount of) sap.
Juicy.
Spongy; Having spaces in which large quantities of sap can flow.
Musty; tainted; rancid.
sappy (having lots of sap or sapwood)
Source: wiktionary.org