Tums Thai is a pretty basic Thai restaurant in Randwick, very small, plastic tables and chairs and seats about 15 people. It's always busy and people can also get takeaway. Basically good for a very casual dinner or takeaway. They also do $10 lunch specials which are good value for money.
There are a variety of deep fried entree options like money bags, spring rolls, and curry puffs (which are delicious - very soft). They also have chicken skewers and baby octopus skewers which are pretty good.
As like a traditional Thai place, there are stirfy options, pad Thai, pad everything else and curries.
The pad see-ew is delicious and another good choice is the masamun curry. Red curry is also quite nice.
They offer white and brow rice for those who like choice.
They are pretty fast and also pretty cheap. You can also BYO.