Here's a hypothetical situation

What would you do if you had mentioned to a colleague that you liked literature, for example. Let's be honest: you love literature, and you know a lot about it. You have wide ranging taste honed by years of reading and you really, really know what you're talking about when you make critical comments about things that you've read.

Imagine if you will that this colleague, a nice person who has a lot of skills that s/he brings to the job, starts foisting terrible, awful books on you with the intent of having you read them. And then this coworker for whom you have the highest professional respect begins asking you what you thought of the books s/he passed on to you. And then, after you gently told him or her that they weren't your cup of tea, this person continued to pass increasingly horrible tomes on.

What would you do?

My recommendation is to smile thinly as you accept them, and then don't read them, whilst reiterating the opinion that they're not your cup of tea. Steer strongly away from discussions of precisely what it is that prevents the offering from being your cup of tea, for you will surely launch into a sharply worded and incisive critique of the volume at hand.

But then again, I am an unrepentant liar.