have it off
     v : have sexual intercourse with; "this student sleeps with
         everyone in her dorm"; "adam knew eve"; "were you ever
         intimate with this man?" syn: roll in the hay, love,
          make out, make love, sleep with, get laid, have
         sex, know, do it, be intimate, have intercourse,
          have it away, screw, fuck, jazz, eff, hump,
         lie with, bed, have a go at it, bang, get it on,
          bonk
see also:
roll in the hay love make out make love sleep with get laid 
have sex know do it be intimate have intercourse 
have it away screw fuck jazz eff 
hump lie with bed have a go at it bang 
get it on bonk