Robert Downey Jr. Tells A Group Of College Kids How Big His Penis Is

Hollywood star Robert Downey Jr. is known to many as Iron Man, but a lucky few may know him more intimately by his lewd nickname.

Ahead of the student union address at Cambridge University, Robert Downey Jr. was asked how big his penis was by a student reporter.

‘They don’t call me throbbing knob for nothing,’ he bragged.