Quiz; Popular phrases

[heccy]

M.D.A.L (6,7,2,4)
T.S.I.N (6,6,2,7)
S.U.O..S.O (5,2,2,4,3)

Can anyone help,thought number three could be sonething like "Stand up or ship out" but doesn't sound right
Thanks Heccy

[gazzawazza]

3 Shape up or ship out.

[ladyalex]

There's safety in numbers ?

[shaneystar2]

Mutton dressed as lamb

[heccy]

Thanks all, gazzawazza, ladyalex and shaneystar 2. Brilliant, i just had a blank. Also have one SBTB to which i got Saved by the Bell but they have another of the same letters but I can't think of another one. Have yiu any thoughs on this. Thanks Heccy

[vegasmad]

This is a long shot but,
stand back to back?

[heccy]

Thanks vegaxmad, sounds right. That's them finished, v grateful to everyone who helped.
Heccy