('informal') She's a good musician but comparing her to the legends is 'stretching it'. [=she's good but she can't really be compared to the legends]
Although it may be 'stretching a point' [=exaggerating slightly] to say that this was his best win ever, it was nevertheless impressive.
The work doesn't 'stretch' me intellectually. [=the work is too easy for me; the work is not intellectually challenging]
(..) - Come here. - Whoa, whoa! Fuck! Ls this just my imagination, or has my class grown considerably? Well, by no stretch of my imagination do I believe you've all come here to hear me lecture. Or rather, to ascertain the identity of the mystery math magician. So without further adieu, come forward, (..)1997 Good Will Hunting