I will always recommend this place for it's great meat burgers. This is one of the few places serving meat burgers and truly, they come in all sizes. People actually have competitions and bets to try and finish the Mother of All Moos or Moos Your Daddy Burgers. The burgers are Thulp's best selling stuff. They also had some Oriental and Thai stuff which is gone now and that's a shame because they did such a perfect balance between the American and Thai food.
Lots of their starters are good too, the skewers of course, are usually never a disappointment, the chicken wings come in quite large portions. Bangkok Dangerous is a nice chilli crispy beef dish which I will recommend any day. I'm not crazy about their chicken burgers, they're not really the best, so it's better to have zinger I'd say. Salads are decent but not really creative as the place is.
The ambiance is cute, with Japanese cartoon posters on the wall, creative table mats and games available to keep you there with the gang for a long while. It is quite crowded from Friday to Sunday, so pick a good time to go. :)