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2.
When a guy doesn't cum for long periods of time, and when he does cum, it comes out as a chunk, or a wad of held back cum.
Dude last night I released a nice cumchunk when I hung with Sally from work!
by ZeroDesert March 17, 2009
 
1.
Tapioca like cum; semen.
Bead like balls of sticky cum.
After he pulled out, the tapioca like cum chunks found their way up my rib cage and clung to my finger tips.
by Qad3sh March 07, 2011