Expressing a positive feeling, especially praise, in such a strong way that it does not sound sincere. (Cambridge Dictionary)
When liquid gushes out of something, or when something gushes a liquid, the liquid flows out very quickly and in large quantities. (Collins Dictionary)
To emit a sudden copious flow. (Merriam – Webster)
(of speech or writing) effusive or exaggeratedly enthusiastic. (Oxford Dictionaries)
Gushing – iBank Coin.