Blame Somtam

crabs in somtam are mainly freshwater crabs, hence many times when eaten, you have an explosion in your pants, even for Thais

Not necessarily true. Depends on where you live and type of ST. They are 2 distinctive different types of salad.

I still stand by that the majority of the somtam stalls are freshwater crabs... blue crab is expensive, hence you find it at restaurants instead of stalls...or you find it at cities closer to the beach more often

Wife eats sea crabs in her Somtam regularly in Isan.

Chesapeake Bay blue crabs have a minimum 5" shell regulation and there's no shortage

The Thai word for "lobster" is กุ้งก้ามกราม or Giant Freshwater Prawn.

However, lobsters aren't Freshwater and you can't buy them in Thailand.

Looking forward to eating a fresh Lobster roll with coleslaw this holiday weekend.

Sucks to be in Thailand, eh?

Giant Freshwater Prawns are the blue guys with the long pincers. Lobster is Kung Mangkorn.