So, when the wife knows more about cars than the husband it's scaryUndertanding it straight forward - it would have something to do with crabs or specifically fishing for those, since crab is not fish, process is likely to be crabbing. There is an anecdote to it: wife calling husband and says:
-honey, car wont start, it is very likely that there is water in carburator.
Husband goes: ok, wow, why would you assume it is water in carburator, you dont know anything about cars and carburators...
Wife: because car is waist deep in the lake.