Be on nettles and Be on pins and needles

Be on pins and needles and be on nettles are semantically related. In some cases you can replace phrase "Be on pins and needles" with "Be on nettles", this phrases are similar.

Be on nettles and be on pins and needles are semantically related. Sometimes you can replace phrase "Be on nettles" with "Be on pins and needles", this phrases are similar.