How do I stay drunk? Easy! Just pour another...

(in Scots-English, by the way, "how" can often be used with the English-English sense of "why"; "How did a farmer plant his crops in the eighteenth century?" asked a teacher; "If he didnae, therr wud be naethin tae eat" came the reply. So, "How dae ye stay drunk?" - because things are unbearable sober.

Ah; was that "say drunk"?