1st one is sending more thne 1 gift.
select maybe 1-10 people and when you hit the "send button" keep clicking that button = some times the people in the list stay in the list and the send button is still "alive" to send requests. (I managed to do this while sending food). I can reproduce this on Chrome only.

I thought the above would send "dead" requests but the other account that recieved 500+ 100+ gift requests was able to accept all the food ide just sent.


2nd one is when accepting HUGE ammount of gifts
when accepting alot of gifts fast - some times the game throws 10 million food or gold into your game. (you have to be quick at using as much as possible then hitting the "save" button inside options. you have around 15 seconds befor the game does a "force refresh".