When someone rejects or turns you down (curves you) but does it in a nice way that isn't a definite "no".

For example, when a guy asks if a girl wants to hang out and she says "maybe, i'll think about it" and the topic never comes up again.
"he asked me out a few weeks ago but I gave him that soft curve"
by aquailrr February 11, 2017
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When a man intentionally or otherwise folds his penis in half durring a sexual act.
After the party last night, Jim had to soft serve the curve in an attempt to satisfy his lady.

see also: middling.
by cunt boss September 5, 2012
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