Top quark and $Z,W$ bosons? The masses of the Z and W particle sum almost exactly to the mass of the Top quark,within the errors:
Z + W = 80.385±0.015 + 91.1876±0.0021 = 171.57 ±0.0171 GeV
Top quark 172.9± 1.5 GeV A: Is this one of those simple coincidences?
B: The Z,W particles are decays of the T?
C: Someone has a not too cranky idea connecting them?
EDIT:
After consideration of dmckee and Lubos posts.
How about instead of a decay from a t quark, collide a $W^\pm$ and a $Z$ to produce a red top and anti-red bottom. 
$$W^+ + Z^0 \to t(r)   + \bar{b}(\bar{r})$$
this conserves charge, spin, color, confinement and energy - provided the excess energy of the bottom quark comes from the kinetic term of the collision. It immediately decays as lubos and dmckee  pointed out in an early question 
EDIT 2:
Also note decay time of t-quark is $4.2\ 10^{-25} s$, nearly matching the  W,Z decays times of $3.0\ 10^{-25} s$ , although I'm yet to find an uncertainty for these.
And with incredible hubris I'm calling this the Metzgeer Momentary Meson $t\bar{b}  $
:) joke
A: You run into several practical problems immediately.


*

*The total angular momentum of a system of a $W^\pm$ and a $Z$ is an integer, but the top has spin $\frac{1}{2}$.

*The charge of a system involving one $W$ and one $Z$ would be $\pm 1$. The top has charge $\frac{2}{3}$.
These two could be repaired by assuming that there is a spin $\frac{1}{2}$ charge $-\frac{1}{3}$ particle involved. However...


*

*The decay modes would generate some really funny implications. Start with the predominate mode: $t \to W^+ + b$ means that we're suggesting that a $Z$ is related to a $b$ (and a anti-down or anti-strange?) somehow. 
Wait! what? 
We started with one quark related to two weak vector bosons because the masses came out close and now we have some other quark related to one weak vector boson even though the masses are totally different. And even if we believe that what are we going to do about the origin of the lighter quark generation? Or are we to believe that only the top and bottom are related to the weak bosons?
Any way, as you may have guessed, I'm going with coincidence all the way. They have to happen sometimes.
A: It could happen as long as conservation of momentum was possible which it could be with some changes. Also conservation of color charge needs to happen. Otherwise it makes sense. 
$$W^+ + Z^0 \to t(r)   + \bar{b}(\bar{r})$$
$$t(r) \to b(r)  + {W^+}$$
If we add these two equation we get:
$$W^+ + Z^0 \to W^+  $$
This is a perfectly normal reaction that can happen directly without any top quarks interfering.  The top quark version is just the more rarer process.
