'where does a thought come from' ?

[Aperitif]

Two sad faces without a wink is serious trusty...
I'm thoughtless sometimes (well, most of the time if you see the rubbish I post)
I'm sorry I haven't a clue...

Ah! Two sad faces - it's easy!

 

[trustysteed]

do two make a ?

 

[Aperitif]

? Don't even think about it...