cupboard love
US /ˈkʌb.ərd ˌlʌv/
UK /ˈkʌb.ərd ˌlʌv/

1.
討好, 為了得到好處的愛
affection shown only to get something in return, especially food
:
•
Her sudden affection for her aunt was just cupboard love, as she knew her aunt had cookies.
她對姑媽突然表現出的喜愛只是為了得到好處,因為她知道姑媽有餅乾。
•
The cat only comes to me for cupboard love when it's hungry.
貓只有在餓的時候才會為了討食而靠近我。