Keep sounds more natural, but I can't say give is wrong. Bump means to hit, and in this case it would mean 'while walking'.
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BarbaraPAUnless you do it frequently, you probably meant you bumped you knee.You are aware, of course, that *** gave us toes so we could find furniture in the dark.
Philip*** gave us toes so we could find furniture in the dark.And, recently in my case, heads, so we can remember that the kitchen cupboard door is still open. Ouch.