What do you consider good foreplay?

what do you consider good foreplay

This may all be a matter of preference.
There has to be some level of depth, in looking into the likes/dislikes of your self or someone else, as far as your & their definitions of "Foreplay."
Now because this can very, there is really no "set" answer.

Talk to you partner, if this is the case & better understand their point of view.
A healthy level of communication is the key to bridging the gap of informational knowledge, which you can use to have a better understanding of what is or is not acceptable. Within however, the norms, but also without limitations if as long as being legal, you and your partner have both discussed and came to an agreement of.

In other words, talk to you're partner and allow a discussion of boundaries and acceptable behavior, prior to jumping in and doing them; so as not to offend.

The foreplay is good when the girl cannot stand it, and rapes you.