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1.
The creamy product forcibly ejaculated following stimulation of a man's penis.

Man custard is often found as an additional free topping on San Marino pizza.
Yes, I'd like to order a Hawaiian pizza without man custard please.
by mercunium November 11, 2003
 
2.
cum,jizz, seaman (no, not a sailor) salty icing sugar etc
Im gona bash the bishop and squirt man custard all over the cuttlery and blame the dog. (true story)
by raging man juice July 17, 2009