A condition a man with a large penis may almost always develop up to some level.
The general key-symptom for men with TBP-syndrome is that they often fale to really make any real genuine effort in keeping their partner happy and pleased- Besides perhaps sexually of course!
Basically: They don't really Care - because they don't really Have to!
May in EXTREME cases(!) lead to a severe lack of important qualities in personality, sometimes missing one all together (In which case these men may be good for One thing, but then only that(!)... as beyond quite boring)!
Important to keep in mind though: NOT ALL men with big dicks develop this syndrome!!!!
However, it IS more or less common for well hung men to obtain Some form of classical TBP-syndrome behaviour, even though more often in a moderate form.
Intensity may correlate with size of penis.
-Um... Are you guys dating or something??
-Well yeah, I'm on that huge dick like every day now!!!
-I see.... its a case of the Too Big Penis syndrome.... I'm sorry.