lamford, on 2016-January-10, 19:45, said:
In England, a Lucas or Muiderberg two would be alerted and not described as a weak two, but described as a two-suiter with a stated point range.
True, nut I guess that's not what barmar means.
I think he means that the phrase "a weak two" is also used to describe a hand type rather than a bid. A bid that by agreement shows a 6 card suit and about 6-10 HCPs is described as "a weak two", even if it isn't a weak two.
Examples:
1♠-(2NT)-3♥: "Non forcing, something that looks like a weak two in hearts"
1NT-Pass-4♦ (Texas): "Transfer to hearts, 6+ hearts, typically something that looks like a good weak two in hearts"
I guess that Blackshoe is fine with the idea of the opponents explaining: 2♥-Dbl: "An opening without an alternative bid" and then show up with ♠x♥xx♦xx♣KJxxxxxx (fine according to partnership agreement). After all, in his view "a four level opening is also an opening".
Rik